Fe/male Switch: Your Startup Facilitator & Incubator for Women

Open-Source AppSheet Alternatives (2027): 10 Self-Hosted No-Code App Builders for Spreadsheets and Databases, Checked for Licence and Activity

Open-Source AppSheet Alternatives: No-Code Apps on Your Own Spreadsheets and Databases

Google AppSheet turns a spreadsheet or database into a working app: forms, tables, approvals, photo and signature capture, offline use and automated emails, without code. It is convenient, but it is closed source, it runs only in Google's cloud and you pay for every user once the app leaves the prototype stage. An open-source alternative lets you run the app builder on your own server, keep your data in your own database and stop paying per user. We checked every project below on its official website and GitHub in October 2026: the exact licence, the latest release, whether the repository is still maintained, what the free self-hosted edition includes and what the hosted plans cost. Four tools from the earlier list changed licence, are not open source, stopped development or are not app builders, and they have their own section at the end.
Quick answer: for the closest open-source replacement of AppSheet for non-developers, use Budibase (apps, tables and automations) or Baserow (a no-code database with an application builder). If your data lives in spreadsheets and you want to keep working in a grid, choose Grist or Teable; for bigger business systems with unlimited free users, choose NocoBase; for apps on Google Sheets, databases and APIs with JavaScript, choose Appsmith; and for a tiny, fully free MIT builder that also makes mobile apps, choose Saltcorn.
Boost Your SEO by Getting Featured in Our Blogs and get a backlink.

We publish content about startups, education, tech, funding, etc. that ranks well not only in Google but also in Perplexity, ChatGPT, Grok and other AI tools.

👉 Get featured now!

What AppSheet Costs in 2027

To know what you are replacing: the AppSheet pricing page (checked October 2026) lets you build and test apps for free with up to 10 test users. To deploy an app to your team you need a paid plan: Starter costs $5 per user per month, Core $10 per user per month (it is included in most paid Google Workspace plans) and Enterprise Plus $20 per user per month. The built-in AppSheet databases hold 2,500 rows each on Starter and Core. Connections to cloud databases, APIs and SaaS services are listed only on Enterprise Plus, and the pricing page lists no version you can host yourself. Every tool below can be self-hosted for free; you pay for the server and your own time instead.

Open-Source AppSheet Alternatives Compared

ToolBest forLicenceFree self-hosted editionHosted plans (Oct 2026)
BudibaseNon-developers: apps, data tables and automationsGPLv3 overall; paid features BSLUnlimited apps and users, 1 workspaceCloud Pro $19/month
BaserowAirtable-style database plus apps and portalsMIT core (open-core)Open Source Edition, no storage limitsFree cloud plan; Premium $10/user/month billed yearly
NocoBaseData-model-first business systems (CRM, ERP)Apache 2.0 with extra termsUnlimited users, apps and recordsOne-time licences from $800
AppsmithApps on Google Sheets, databases and APIsApache 2.0Community EditionCloud free for 5 users; Business $15/user/month
GristSpreadsheet-database apps with access rulesApache 2.0 (grist-core)Community editionFree cloud plan, 5,000 records per document
TeableSpreadsheet on PostgreSQL with an AI app builderAGPL-3.0 core, MIT packagesSelf-hostable from the codeFree cloud plan; Pro $13/seat/month billed yearly
ToolJetInternal apps generated from a promptAGPL-3.0Community EditionCloud free for 2 builders and 50 end users
SaltcornSmall web and mobile database appsMITFull software, no limitsFree test instance only
MathesarA spreadsheet view and forms on PostgresGPL-3.0Full software, no limitsNot compared
nuBuilder ForteForms and reports on MySQL or MariaDBGPL-3.0Full software, no limitsNone listed
Sources: each project's official website, pricing page, LICENSE file and GitHub releases, checked 27 and 28 October 2026. Self-hosting is free, but you pay for the server and your own time.

The Best Open-Source AppSheet Alternatives in 2027

1. Budibase: the closest AppSheet-style builder for non-developers

Budibase combines the three things most AppSheet users need: apps for your team, data tables that connect to your databases and spreadsheets, and automations for approvals, routing and notifications. It also has AI agents that answer employee requests. It has a Google Sheets data source, so you can start from the same sheet your AppSheet app uses today. Its licence file says Budibase is GPLv3 overall, while paid features live in a separate package under the Business Source License. The self-hosted open-source plan is free with unlimited apps, users, automations and agents, plus SSO, in one workspace. Budibase Cloud starts at $19 a month for the Pro plan with one creator, and end users cost $5 each. Version 3.51 came out in October 2026.

2. Baserow: a no-code database with an application builder

Baserow starts as a spreadsheet-database hybrid, like Airtable, and adds an application builder for apps and portals that you can publish on your own domain, plus automations, dashboards and an AI assistant called Kuma. It is open-core: its licence file puts the Open Source Edition under the MIT licence, while premium and enterprise features have their own licences. Its README says the self-hosted version has no storage restrictions. In the cloud, the Free plan includes 3,000 rows and 2 GB of storage per workspace and 500 external app users; Premium costs $10 per user per month billed yearly ($12 monthly). Version 2.4.1 came out in October 2026.

3. NocoBase: a data-model-first platform with unlimited free users

NocoBase starts from your data model rather than from screens, which suits AppSheet apps that have grown into a full CRM, inventory or ticketing system. It is built from plugins and now leans on AI: coding agents can build and change the system while people approve the changes. The free Community Edition has no limits on users, applications or records, but you must keep the NocoBase logo; paid licences are one-time payments from $800. Read the licence carefully: it is Apache 2.0 with supplementary terms that forbid offering a public no-code, low-code or AI platform SaaS built on NocoBase. Version 2.2.35 came out on 28 October 2026.

4. Appsmith: apps on Google Sheets, databases and APIs

Appsmith is an open-source internal tool builder: you drag widgets onto a canvas, connect them to a database, an API or Google Sheets, and add logic in JavaScript. That makes it more technical than AppSheet, but also much more flexible once a simple app needs custom screens. The code is under the Apache 2.0 licence, and the Community Edition is free to self-host. In the cloud, the free plan covers up to 5 users and Business costs $15 per user per month. Version 2.5.1 came out in October 2026.
Validate your startup idea with the unique borrowed authority approach: we publish articles about your product in our blog and you get traffic and testers for your MVP

  • Prove Market Demand: See real organic traffic and waitlist conversions

  • Unlock High-Potential Keywords: Receive a curated list of top-performing keywords directly from Google Search Console data.

  • Estimate Customer Acquisition Cost (CAC): Gain financial foresight with an estimated CAC based on real keyword performance data.

🔗 Start validating your startup now

5. Grist: a spreadsheet that works like a database

Grist is for teams whose AppSheet app is really a shared spreadsheet with rules. It is a relational spreadsheet: columns have types like a database, formulas are written in Python (with many Excel functions), and you lay out tables, cards, charts and forms side by side. Cell-level access rules control who sees what. Each Grist document is a self-contained SQLite file, so backups and moves between servers are simple. The grist-core code (the Community edition) is Apache 2.0 and free to self-host. The cloud Free plan allows up to 5,000 records per document. Organisations with less than $1 million in total annual income can also request a free activation key for the full self-hosted Grist. Version 1.7.21 came out in October 2026.

6. Teable: a spreadsheet on PostgreSQL with an AI app builder

Teable looks like a spreadsheet but runs on a real PostgreSQL database. You describe the app you need, and its App Builder agent builds it and deploys it to its own URL; AI automations react to record changes, schedules and webhooks. Teable also has apps for iPhone, iPad and Android, which matters if your team used AppSheet on the phone. Its licence file puts the core applications under AGPL-3.0 and the SDK packages under MIT, with extra terms that protect the Teable brand. The cloud Free plan includes 1,000 rows and 100 automation runs; Pro costs $13 per seat per month billed yearly. Check which features the self-hosted edition includes before you plan around them: the admin panel, for example, is listed for self-hosted Business. Teable ships new builds several times a week; the latest came out on 27 October 2026.

7. ToolJet: internal apps generated from a prompt

ToolJet describes itself as an AI app builder for internal tools: you describe the app in plain English, it generates screens and queries, and you refine them visually. It has more than 100 connectors and its own PostgreSQL-based database. The code is AGPL-3.0 and the Community Edition is free to self-host with Docker or Kubernetes. The cloud Free plan includes 2 builders, up to 50 end users and 10 apps. Long-term-support version 3.20.251 came out in October 2026.

8. Saltcorn: a small MIT builder for web and mobile database apps

Saltcorn is an open-source no-code database application builder (MIT) for web and mobile apps with views, layouts and actions on PostgreSQL. Mobile builds need a separate Docker image with the mobile dependencies. Saltcorn says a 2 GB virtual server is enough unless you expect heavy traffic. You can explore it on a free multitenant instance at saltcorn.com, which the project says is for testing only, and then self-host it. Its website announces build 1.6.1 with a visual workflow editor and an AI copilot app builder, and beta builds of version 1.7 came out in October 2026.

9. Mathesar: a spreadsheet view and forms on your Postgres database

Mathesar gives people without SQL skills a spreadsheet-like interface on an existing PostgreSQL database: they can view and edit records, filter and group, build queries without SQL and share forms whose answers land as new records. Access uses your existing Postgres roles, and the data never leaves your server. It is GPL-3.0 and self-hosted. The project calls itself a public beta; version 0.12.0 came out in July 2026, and the code repository was still updated in October 2026.

10. nuBuilder Forte: forms and reports on MySQL for PHP teams

nuBuilder Forte is a long-running low-code tool for web database apps: forms, reports, queries and the usual search, create, update and delete screens. It needs PHP 7.4 or newer and MySQL 5.7+ or MariaDB 10.3+, and you can extend it with JavaScript, PHP, HTML and CSS, so it suits a small team with some web skills. The code is GPL v3. Releases are slow: the last one, 4.9.2.0, came out in September 2025, although the repository was still updated in October 2026.
Join ElonaHunt (like ProductHunt but for women) and explore the coolest women-focused startups out there!

Discover your next big inspiration and connect with like-minded female entrepreneurs!

👉 Join the Hunt Here

AppSheet Alternatives That Changed, Stopped or Are Not a Fit

The 2025 version of this article listed ten tools. Four of them no longer belong on an open-source AppSheet shortlist:
  • NocoDB: still very active (version 2026.10.0 came out in October 2026) and a good Airtable-style database, but its licence file (updated 29 January 2026) now uses the Sustainable Use License. It allows use for your own internal business, but it is a source-available licence, not open source.
  • UI Bakery: a commercial low-code platform. It offers a self-hosted edition, but the builder itself is not released under an open-source licence, so it does not fit this list.
  • ILLA Builder: still Apache 2.0 on GitHub, but its last release, 4.8.5, came out in August 2024, the last code change was in May 2025 and the illacloud.com website no longer loads. Treat it as unmaintained.
  • Node-RED: active and Apache 2.0 (version 5.0.9 came out in October 2026), but it is a flow-based tool for wiring together devices, APIs and services, not an app builder. It works well next to one of the tools above.

Which Open-Source AppSheet Alternative Should You Choose?

  • You want the closest AppSheet replacement for a non-technical team: Budibase, or Baserow if you also want an Airtable-style database.
  • Your app is really a shared spreadsheet: Grist, or Teable if you want AI to build the app and need phone apps.
  • Your app has grown into a CRM, ERP or ticketing system: NocoBase.
  • You keep the data in Google Sheets or a database and can write some JavaScript: Appsmith, or ToolJet if you want the first version generated from a prompt.
  • You want something small, fully free and MIT-licensed, including mobile apps: Saltcorn.
  • Your data already lives in PostgreSQL: Mathesar for a spreadsheet view and forms; nuBuilder Forte if you work with MySQL and PHP.

How Founders Use Open-Source App Builders

For a small startup, the first AppSheet-style app is usually a simple operations tool: an order or booking tracker, an inventory list, a field checklist with photos, or an approval form that sends an email. Start with one painful manual task and move just that spreadsheet into Budibase, Baserow or Grist before you migrate anything else. Before you choose a platform, read the 8 biggest mistakes when choosing no-code tools and the hidden costs of no-code AI development. If you are building a product for customers rather than a tool for your team, compare the best no-code AI app builders for startups and these no-code web app builders.
Need admin panels and dashboards for developers rather than spreadsheet apps? See our open-source Retool alternatives. Connect your apps to the rest of your stack with one of the open-source Zapier alternatives, or follow our n8n guide for beginners. If you like to self-host, we have also checked open-source Notion alternatives for docs and wikis, open-source Trello alternatives for boards, open-source Expensify alternatives for expenses and open-source GitHub Copilot alternatives for coding. Before you build anything, validate your startup idea with real users, and write the help articles for your app with the F/MS AI SEO Tool so customers find them in Google and AI assistants.

FAQ About Open-Source AppSheet Alternatives

What is the best open-source alternative to AppSheet?

For non-developers, Budibase is the closest match: apps, data tables and automations without code, a Google Sheets data source and a free self-hosted plan with unlimited users. Baserow is the best choice if you also want an Airtable-style database with an application builder.

Can I self-host AppSheet?

No. When we checked in October 2026, the AppSheet pricing page listed only cloud plans: free prototyping with up to 10 test users, then Starter at $5, Core at $10 and Enterprise Plus at $20 per user per month.

Is there an open-source AppSheet alternative that works with Google Sheets?

Yes. Budibase and Appsmith both connect to Google Sheets, so you can build a new app on the sheet you already use and move the data into a database later.

Which open-source AppSheet alternative has mobile apps?

Saltcorn can build mobile apps from your database apps, and Teable has its own apps for iPhone, iPad and Android. The other tools build web apps, so test each app's layout on a phone before you switch off AppSheet.

Is NocoDB still open source?

Not in the strict sense. Its licence file, updated in January 2026, uses the Sustainable Use License, which allows use for your own internal business but limits commercial redistribution. It is still actively developed.

Is UI Bakery open source?

No. UI Bakery is a commercial low-code platform with a self-hosted edition, but the builder is not released under an open-source licence.

Is ILLA Builder still maintained?

It does not look like it. Its last release came out in August 2024, the last code change was in May 2025 and its website no longer loads. Use Budibase, Appsmith or ToolJet instead.

What does it cost to self-host an AppSheet alternative?

The software in this list is free to self-host, so you pay for the server and your own time. Saltcorn, for example, says a 2 GB virtual server is enough unless you expect heavy traffic.

Which tool is best if my data already lives in PostgreSQL?

Mathesar gives non-technical people a spreadsheet view, a query builder and forms directly on your Postgres database, using your existing database roles. Teable and Saltcorn also run on PostgreSQL.

Where can I get a backlink by writing about my startup?

You can publish a guest post in one of the Fe/male Switch startup blogs, which rank in Google and in AI tools. Get a quality backlink.

About the Author

Violetta Bonenkamp, also known as MeanCEO, is an experienced startup founder with an impressive educational background including an MBA and four other higher education degrees. She has over 20 years of work experience across multiple countries, including 5 years as a solopreneur and serial entrepreneur. Throughout her startup experience she has applied for multiple startup grants at the EU level, in the Netherlands and Malta, and her startups received quite a few of those. She’s been living, studying and working in many countries around the globe and her extensive multicultural experience has influenced her immensely.
2026-10-28 19:48 Top Alternatives