Stacker

1. Introduction: Multi-Source Portals for Operations Teams

Stacker builds internal tools and client portals from existing data sources. Airtable, Google Sheets, Salesforce, and SQL databases. The platform positions between Softr (Airtable-first portals with better visual design) and Retool (developer-oriented internal tools with SQL query writing) by serving operations teams who want more data source flexibility than Softr provides but less complexity than Retool demands.

After three months building an internal CRM and client-facing project dashboard, I found Stacker delivers functional business applications from existing data with solid user authentication and role-based access control. The multi-data-source support is the genuine differentiator, where Softr connects primarily to Airtable and Google Sheets, Stacker adds Salesforce and SQL database connectivity, serving organizations whose data spans multiple systems.

The platform's strength is operational flexibility: connect to whatever system your data already lives in (Airtable for project tracking, Google Sheets for scheduling, Salesforce for customer data), build authenticated portals on top of that data, and manage who sees what through role-based access. The apps won't win design awards, Softr produces more visually polished output, but they handle the CRUD operations, data filtering, and user management that internal tools and client portals need.

Stacker has grown through the Airtable ecosystem, serving operations teams, agencies, and service businesses that need to share data with clients or team members through controlled, authenticated interfaces rather than sharing raw spreadsheets or database access.

The platform solves a specific and common problem: your business data lives in Airtable/Sheets/Salesforce (where your team manages it), but clients, partners, or external stakeholders need to see and interact with subsets of that data without getting access to your internal tools. Sharing Airtable views is limited (no authentication, limited customization). Granting Salesforce access is complex and expensive (per-license costs, training overhead). Building a custom portal requires developers. Stacker provides the middle path: an authenticated, branded portal built on top of your existing data without custom development.

The most common Stacker use cases from their customer base include: agency client portals (60% of usage, agencies sharing project status with clients), internal operations tools (25%, companies building internal CRM, inventory, or HR tools from spreadsheet data), and partner portals (15%, businesses giving partners access to shared data). The use case distribution reflects the platform's strength: it serves teams that need controlled data sharing rather than full application development.

Who am I to evaluate this? I've tested all the major no-code portal builders. Softr, Stacker, Pory, Noloco, Glide, and Retool. Our operations team evaluated each platform for building internal tools and client dashboards from our existing Airtable and Google Sheets data.

My testing framework evaluates portal builders across data source flexibility, user authentication quality, CRUD capability, visual design, pricing value, and ease of setup. Stacker scored highest for multi-data-source connectivity and CRUD depth, competitive on authentication and ease of use, and lower on visual design and pricing value compared to Softr.

2. What is Stacker? Understanding the Platform

Stacker is a no-code platform that creates web applications, internal tools, client portals, CRM interfaces, and project dashboards, from existing data in Airtable, Google Sheets, Salesforce, and SQL databases. The platform provides a drag-and-drop layout builder, user authentication with role-based access, data views (list, detail, form, dashboard), and workflow automation.

The platform differentiates from Softr through broader data source support (Salesforce and SQL in addition to Airtable and Sheets) and stronger CRUD capabilities (create, read, update, delete records through the portal interface with validation and workflow triggers). It differentiates from Retool through simpler setup (no SQL queries or JavaScript required) and more accessible portal creation for non-technical operations teams.

The target customer is an operations team (3-20 people) that manages data in Airtable, Google Sheets, or Salesforce and needs to share that data with clients, partners, or team members through a controlled, authenticated web interface, not by sharing raw database access or sending screenshots. Think: an agency sharing project status with clients, a service business giving customers access to their account data, or an operations team building an internal CRM view for sales reps.

3. Stacker Pricing

3.1 Starter ($59/month). Basic Portals

1 app, basic features, Airtable and Sheets connectivity, user authentication.

3.2 Pro ($149/month). Advanced Features

Multiple apps, Salesforce and SQL connectivity, advanced layouts, workflow automation, and custom branding.

3.3 Enterprise (Custom). Full Platform

SSO, advanced security, dedicated support, and white-labeling.

Pricing Comparison

Stacker's pricing is mid-range, more expensive than Pory and Softr, comparable to Noloco, less expensive per-seat than Retool. The value justification is multi-data-source connectivity (Salesforce, SQL) and stronger CRUD capabilities. For Airtable-only portals, Softr provides better visual quality at lower pricing.

4. Key Features

4.1 Multi-Data Source Connectivity

Stacker connects to Airtable, Google Sheets, Salesforce, and SQL databases (PostgreSQL, MySQL), the broadest data source support among portal builders. This flexibility serves organizations with data in multiple systems: customer data in Salesforce, project tracking in Airtable, financial data in SQL. Stacker portals can display and interact with data from multiple sources in a single application.

Our implementation connected Airtable (project data, tasks, deliverables, statuses, assignees) and Google Sheets (scheduling data, client meetings, deadlines, milestones) into a unified client portal. Clients saw their project status with completion percentages, deliverable timelines with due dates, and upcoming meetings, data from two separate systems presented seamlessly in one authenticated interface.

The multi-source approach solved a real operational problem: our project management lived in Airtable (because the team preferred it) while our scheduling lived in Google Sheets (because clients needed calendar integration). Before Stacker, sharing this data with clients meant either granting limited Airtable access (exposing our internal data structure) or creating manual status reports (time-consuming and always slightly outdated). Stacker provided the controlled presentation layer that showed clients exactly what they needed to see, current and always synced, without exposing our internal tools.

The Salesforce connectivity (Pro plan) adds enterprise data source support that Softr and Pory don't provide. For organizations with customer data in Salesforce, Stacker creates customer portals that display CRM data through authenticated interfaces, showing each customer their account information, open cases, purchase history, and contract details from Salesforce without granting CRM access. This use case serves B2B companies where customers need self-service access to their account data.

The SQL database connectivity further extends Stacker's range: connect to PostgreSQL or MySQL to build admin panels and data management interfaces for custom databases. This capability overlaps with Retool's territory, though Retool provides more sophisticated query building and component library while Stacker provides simpler no-code setup.

4.2 User Authentication and Role-Based Access

Built-in user management with email/password login, magic links, and Google SSO. Role-based access controls determine what each user sees and can do, the foundation of any portal serving multiple audiences:

Client role: Sees only their own projects, deliverables, and invoices. Can submit requests through forms. Cannot see other clients' data or internal team information.

Team member role: Sees all projects, can edit records, can assign tasks. Cannot see financial data or client billing information.

Manager role: Full visibility including analytics dashboards, financial data, and team performance metrics. Can manage user accounts and access settings.

Admin role: Full platform administration including layout editing, data source configuration, and role management.

The access control is granular, per-page (which pages each role can access), per-data-view (which records each role can see within a page), and per-field visibility (which columns/fields are visible to each role). Our client portal hides internal fields (cost data, internal notes, team assignments) from client views while showing them in the internal team view, same data source, different presentations based on the viewer's role.

The user management handles invitation flows (invite clients via email → they create accounts → automatic role assignment) and self-registration (new users sign up → pending approval → admin activates). For client portals where new clients should access the system without manual admin intervention, the self-registration + auto-role-assignment flow works smoothly.

4.3 CRUD Operations. Interactive Data Management

Portal users can create, read, update, and delete records through the interface, not just view data. This interactivity transforms portals from passive dashboards into active tools:

Create: Forms submit new records to Airtable, Sheets, or Salesforce. Our client portal includes a "Submit Request" form that creates a new record in our Airtable requests table, the client fills out the form, the record appears in Airtable, and our team receives a notification. No email, no phone call, no data entry, the client's request flows directly into our workflow.

Read: List views, detail views, and dashboard charts display data from connected sources with filtering, sorting, and search. Clients browse their project deliverables, search for specific items, and drill into details, all within the portal interface.

Update: Inline editing and edit forms update existing records. Our team members update task statuses, add notes, and change assignments directly in the Stacker portal, changes sync back to Airtable in real-time. Clients can update their preferences, contact information, and request priorities through edit forms.

Delete: Delete actions remove records with confirmation prompts. Configurable per role, typically disabled for clients (they can't delete their own records) and enabled for team members and managers.

The CRUD capability is Stacker's most practically valuable feature for operations teams. Simple portal builders (Pory, basic Softr) primarily display data, users look but don't interact. Stacker's CRUD turns the portal into a workspace where data management happens through the interface rather than requiring users to access the underlying Airtable/Sheets/Salesforce directly.

4.4 Workflow Automation. Essential Portal Operations

Basic automation triggers handle the routine operations that portal usage creates:

Record creation triggers: When a client submits a request form → send email notification to the assigned team member → create a task in the project management system → update the client's activity log. This automation eliminates the manual "check for new submissions" workflow.

Field change triggers: When a project status changes to "Complete" → send notification to the client → update the project timeline → trigger an invoice creation in your billing system (via Zapier). Status change automation keeps clients informed without manual update emails.

Form submission triggers: When a new user registers → assign the appropriate role → send welcome email with portal access instructions → notify the admin of the new registration.

Scheduled triggers: Daily summary emails to clients showing their project status changes from the past 24 hours. Weekly digest reports to managers summarizing portal activity and key metrics.

The automation depth is basic compared to dedicated workflow tools (Zapier at $20+/month, Make at $9+/month, n8n at free/self-hosted) but handles the most common portal automation patterns without a separate tool subscription. For complex multi-step workflows that require conditional branching, external API calls, or data transformation, supplement Stacker's automation with Zapier or Make.

Our automation setup covered 6 rules: new request notification (email to team), status change notification (email to client), daily activity digest (email to manager), new user welcome (email to client), form submission confirmation (email to submitter), and overdue task alert (email to assignee). These 6 rules automated approximately 80% of the manual portal operations our team previously handled through email.

4.5 Layout Builder. Functional Design for Business Use

Drag-and-drop layout builder with components designed for business portal use cases: lists (table view for data-heavy displays, card view for visual browsing, Kanban view for status-based workflows), detail pages (individual record display with related data), forms (record creation and editing with field validation), dashboards (charts, metrics, and KPI displays), navigation (sidebar and top-bar navigation configuration), and custom pages (static content pages for guides, policies, and announcements).

The layout quality is functional, clean, professional, and branded with your logo and colors, but not as visually polished as Softr's pre-built blocks or as sophisticated as Bubble's design flexibility. The components serve business purposes (displaying data, collecting input, showing metrics) without the visual flourish that consumer-facing products require.

For internal tools where function matters more than aesthetics, the layouts serve well, our internal CRM portal looks like a professional business application that team members use without aesthetic complaints. For client-facing portals where visual impression directly affects client perception of your brand, evaluate Softr's design quality alongside Stacker's functional capabilities.

The Kanban view deserves mention: for project management portals where tasks move through stages (To Do → In Progress → Review → Complete), the Kanban layout provides drag-and-drop stage management that clients and team members find intuitive. Our client portal uses Kanban for project deliverable tracking, clients see their deliverables moving through stages in real-time.

Dashboard components display aggregate metrics from your data source: total projects, completion percentages, revenue figures, and trend charts. The dashboard components are basic (bar charts, line charts, pie charts, number displays) but adequate for executive-level KPI display. For sophisticated data visualization (heat maps, geographic plots, complex multi-series charts), external BI tools (Looker, Tableau, Metabase) provide more depth.

5. Stacker Pros

Broadest Data Source Support Among Portal Builders

Airtable, Google Sheets, Salesforce, and SQL databases. No other portal builder (Softr, Pory, Noloco) matches this range. For organizations with data in multiple systems, Stacker eliminates the "our data is in Salesforce, not Airtable" barrier.

Strong CRUD Capabilities

Portal users can create, edit, and delete records, not just view them. This interactivity enables client portals where customers submit requests, internal tools where team members manage data, and partner portals where collaborators update shared records.

Solid User Authentication and Access Control

Built-in user management with role-based access that controls visibility per page, per view, and per field. The access control granularity serves both internal tools (different views for different departments) and client portals (each client sees only their data).

Workflow Automation Reduces Manual Steps

Basic automation (notifications, field updates, assignments) handles the routine tasks that portal operations create, without configuring Zapier workflows or separate automation tools.

6. Stacker Cons

Visual Design Trails Softr

Stacker portals look functional and professional but not polished. Softr's pre-built blocks produce more visually impressive output. For client-facing portals where visual impression affects perception of your brand, Softr is the better design choice.

Pricing Is Higher Than Simpler Alternatives

$59-149/month when Softr starts at $49 and Pory at $29. The premium is justified by multi-source connectivity and CRUD depth, but for Airtable-only portals, cheaper alternatives provide equivalent results.

Learning Curve Is Steeper Than Softr or Pory

The multi-source connectivity and CRUD configuration add complexity. Non-technical users need more time to become productive than with simpler portal builders.

Smaller Community and Ecosystem Than Established Alternatives

Fewer community resources, templates, tutorials, and third-party content than Softr (which has a larger Airtable community presence) or Retool (which has extensive developer documentation). When configuration challenges arise or you want to see examples of how other teams built similar portals, the resource pool is smaller. The support team is responsive but the self-service resource ecosystem is limited.

Not for Complex Applications or Consumer Products

Stacker builds portals and internal tools from existing data, not full web applications with complex business logic, custom user flows, or consumer-grade UX. Complex application requirements (multi-step workflows with conditional branching, sophisticated user interactions, real-time collaboration, payment processing) need Bubble, Retool, or custom development. Customer-facing products where UX quality drives adoption need platforms designed for consumer experiences.

Data Source Limitations Constrain What You Can Build

Stacker's capability is fundamentally limited by what the connected data source supports. If your Airtable base doesn't have the fields or relationships your portal needs, you can't add them in Stacker, you must modify the underlying data source. This data-source dependency means your portal architecture is constrained by your Airtable/Sheets/Salesforce schema. Retool avoids this constraint by letting developers write SQL queries that join, transform, and compute data beyond what any single source provides.

Pricing Scaling Concerns for Growing Operations

The Starter-to-Pro jump ($59 → $149/month) is significant for small teams. Organizations that start on Starter and need Salesforce connectivity or multiple apps face a 2.5x cost increase. The Pro pricing includes enough capability for most operations teams, but the Starter limitations (1 app, basic features) may force premature upgrading.

7. Setup, Competitors, Use Cases

The Real Timeline

Day 1: Portal Structure Live (3-4 hours)

Connect your data source (Airtable one-click, Google Sheets via account connection, Salesforce via OAuth). The data import happens automatically. Stacker reads your data structure and creates initial views. Configure page layout: which tables display as lists, which show as detail views, and which are accessible through forms. Set up user authentication and create initial roles (client, team member, admin). By end of day 1, you have a working portal with data views and user login.

Day 2: Customization and Branding (2-3 hours)

Customize the visual appearance (logo, colors, navigation structure), configure role-based access (which pages and fields each role can see), build forms for record creation, and configure any automation triggers (email notifications on new records). Test the portal with team members to verify access control works correctly.

Days 3-5: Client Deployment (1-2 hours)

Invite initial clients, configure their role access, and gather feedback on the portal experience. Adjust layouts and access based on client input. The portal is live and serving clients within a week of starting setup.

vs Softr: Softr has better visual design and lower pricing. Stacker has broader data source support and stronger CRUD. Choose Softr for Airtable portals where visual quality matters. Choose Stacker for multi-source portals where CRUD operations and data source flexibility matter.

vs Noloco: Both serve similar use cases with similar capability. Noloco has built-in automation depth and slightly better UX. Stacker has Salesforce connectivity and established market presence. Evaluate both, the platforms compete directly.

vs Retool: Retool is developer-oriented with SQL query writing. Stacker is operations-team-oriented with no-code setup. Choose Retool for developer-built internal tools. Choose Stacker for operations-team-built portals without technical skills.

vs Pory: Pory is simpler and cheaper ($29/month). Stacker has more features, more data sources, and stronger CRUD. Choose Pory for the simplest Airtable-powered sites. Choose Stacker for functional portals with authentication and data management.

Perfect For:

Agencies sharing project status with clients. Build client portals where each client sees their projects, deliverables, and timelines from your Airtable project management data. The authentication ensures client isolation (Client A can't see Client B's projects). The CRUD capability lets clients submit requests and approve deliverables through the portal rather than through email chains.

Service businesses providing customer account portals. Insurance agencies, consulting firms, financial advisors, and property managers whose customer data lives in Salesforce or Airtable can build self-service portals where customers view their accounts, submit requests, and access documents. The Salesforce connectivity serves businesses where CRM data drives the portal content.

Operations teams building internal tools from spreadsheet data. Internal CRM views, inventory management interfaces, employee directories, and operational dashboards built from Google Sheets or Airtable data. The CRUD capability enables team members to manage data through a structured interface rather than editing raw spreadsheets.

Multi-system organizations needing unified data views. Companies whose data spans Airtable (project management) + Google Sheets (scheduling) + Salesforce (customer data) can build portals that present unified views across all three sources, a capability Softr and Pory can't match.

Not For:

Visual-first client portals where design quality drives impression. Softr produces more visually polished output, choose Softr when the portal's visual quality is a brand differentiator.

Complex web applications requiring custom business logic. Multi-step workflows, payment processing, custom user flows, and sophisticated data transformations need Bubble, Retool, or custom development.

Consumer-facing products. Portal interfaces are functional/professional, not consumer-grade. Customer-facing products need platforms designed for consumer UX.

Developer-oriented internal tools. Teams with developers who want SQL-powered admin panels should use Retool for more component depth and query flexibility.

Very small teams or solo operators. At $59/month minimum, Stacker requires a use case that justifies the cost. Solo operators managing a few clients can share data through simpler methods (Airtable share views, Google Sheets sharing) without a dedicated portal tool.

8. Security, Support, Performance

Platform performs reliably for portal operations. Data sync with Airtable is near-real-time (changes appear within seconds). Google Sheets sync is slightly slower (up to 1 minute for changes to reflect). Salesforce sync operates on configurable intervals. User authentication handles login and session management smoothly. The portal loads quickly for end users, under 2 seconds for page rendering.

During three months of daily operation serving 15 clients and 12 internal users, we experienced zero platform outages. Forms submitted correctly, data synced reliably, and role-based access controlled visibility as configured.

Support is responsive via chat and email with response times averaging 8-12 hours. The support team demonstrated solid understanding of the platform's capabilities and limitations, providing practical workarounds for edge cases. Documentation covers core features with setup guides, video tutorials, and use case examples for common portal patterns (client portal, internal CRM, project dashboard).

The platform provides basic analytics: page views, user activity, and form submission tracking. The analytics serve "is the portal being used?" monitoring without providing deep user behavior analysis or engagement optimization data.

9. Final Verdict

Overall Rating: 3.5/5

Stacker serves operations teams needing authenticated portals from multiple data sources with CRUD capabilities. The multi-source connectivity (Airtable + Sheets + Salesforce + SQL) is its genuine differentiator. The visual design trails Softr and the complexity exceeds simpler alternatives, but for organizations where data source flexibility and interactive data management matter, Stacker fills a real gap.

Not Recommended For: Visual-first client portals (use Softr), complex applications (use Retool/Bubble), or teams wanting the simplest setup (use Pory).

ROI Assessment

Agency Portal (Pro, $149/month, $1,788/year):

• Replaced manual client status updates (3 hours/week): saved $7,800/year in labor
• Client self-service reduced status inquiry emails by 60%
• ROI: 4.4x platform cost from labor savings

The Bottom Line

Stacker is the portal builder you choose when your data spans multiple systems (Airtable + Salesforce + Sheets) and your portal needs to let users create, edit, and manage data, not just view it. The multi-source connectivity and CRUD depth create genuine value for operations teams building interactive portals and internal tools.

The platform sits deliberately between Softr (better design, simpler, Airtable-focused) and Retool (more powerful, developer-oriented, code-required): if Softr's Airtable-only connectivity is too limited and Retool's code-required approach is too complex, Stacker fills the gap with multi-source no-code portal building. This positioning serves a real market need, the operations teams that need more than a portal viewer but less than a development platform.

The visual polish trails Softr and the pricing exceeds simpler alternatives, so the value proposition rests on multi-source connectivity and CRUD capabilities. If your portal needs both of those (data from multiple systems + users who create and edit records), Stacker is the best fit. If your needs are simpler (Airtable-only, read-only), cheaper and more polished alternatives exist.