Butterbase
Butterbase: Open-source REST BaaS combining PostgreSQL, AI tooling, realtime, storage and deployment. Ranked #7 of 20 in Backend as a Service (BaaS) Software by our editors (6.7/10); pricing: Free plan · paid from $19/mo; best for open-source REST BaaS with AI tooling.
At a glance
- Editor score6.7 / 10
- PricingFree plan · paid from $19/mo
- Best forOpen-source REST BaaS with AI tooling
- Free planYes
- Paid from$19/mo
- Managed authenticationYes
- Facts checked24 Sep 2026
Where it wins
- PostgreSQL, JWT auth, REST CRUD, storage, functions and realtime in one service
- AI gateway and MCP server support agent workflows with listed coding-tool integrations
- Cloud or self-hosted deployment with frontend hosting and custom domains
Where it doesn't
- Playground is limited to one project, 500 MB database and 1 GB file storage
- Launch and Certified plans cap projects, storage, bandwidth and monthly active users
- Paid plans apply usage-based overage billing for storage and bandwidth
Our verdict on Butterbase
Butterbase is an open-source backend-as-a-service for modern applications and business workflows. It combines PostgreSQL databases, JWT authentication, automatic REST CRUD APIs, S3-compatible storage, serverless functions, realtime WebSocket subscriptions and frontend deployment. Teams can configure applications through a dashboard, API or Model Context Protocol tools, while organizations can choose managed cloud hosting or self-host the Apache-2.0 licensed runtime. Its scope fits solo developers through enterprise teams that want a relational REST backend with AI-oriented tooling.
The published plans show a freemium structure. Playground costs $0 per month and includes one project, a 500 MB database, 1 GB file storage, 5 GB bandwidth, 10,000 monthly active users and preview deployments. Launch costs $19 per month for three projects, 4 GB of database capacity, 50 GB file storage, 100 GB bandwidth, 50,000 monthly active users and $5 of monthly AI usage. Certified costs $90 per month and raises those limits to 10 projects, 8 GB database, 100 GB storage, 250 GB bandwidth, 100,000 monthly active users and $15 AI usage. Enterprise provides unlimited database, storage, bandwidth, monthly active users and projects, plus 24/7 dedicated technical support and SOC 2, SSO and HIPAA options.
Its ecosystem centers on REST APIs, TypeScript/Deno serverless functions with HTTP and cron triggers, presigned file URLs, realtime table updates and an AI gateway for chat, embeddings and model listing. Integrations include Composio, Claude Code, Cursor, Codex and Windsurf, giving AI-assisted development several entry points. The main trade-offs are plan caps, storage and bandwidth overage billing, and Playground projects pausing after one week of inactivity. Choose Butterbase when open-source deployment, AI-agent access and a broad backend surface matter; consider alternatives if fixed usage costs or a narrowly focused backend are higher priorities.
Butterbase pricing
All 4 Butterbase plans and prices →
Butterbase fact sheet
| Free plan | Yes |
|---|---|
| Paid from | $19/mo |
| Database type | Relational |
| Managed authentication | Yes |
| Serverless functions | Yes |
| Realtime data updates | Yes |
| File storage | Yes |
| API styles | Rest |
| Deployment model | Cloud_self_hosted |
| Deployment | Cloud, Self-hosted |
| Platforms | Web |
| Compliance & security | SOC 2, HIPAA |
| Support | Email, Community, Docs · 24/7 |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 5 integrations: Composio, Claude Code, Cursor, Codex, Windsurf |
| Pricing | Free plan · paid from $19/mo (source) |
| Website | butterbase.ai |
| Facts checked | 24 Sep 2026 |
Butterbase integrations
Butterbase lists 5 integrations on its own site.
- Composio
- Claude Code
- Cursor
- Codex
- Windsurf
Alternatives to Butterbase
- SupabaseA complete Postgres BaaS spanning APIs, auth, storage, realtime, and serverless functions.8.9
- Appwrite RealtimePermission-aware live updates inside Appwrite’s broader backend platform.8.4
- ConvexA TypeScript-first reactive backend with realtime data, storage, search, and scheduled logic.8.1
See all Butterbase alternatives →
Butterbase vs the competition
- Butterbase vs Supabase
- Butterbase vs Appwrite Realtime
- Butterbase vs Convex
- Butterbase vs Xano
- Butterbase vs Parse Platform
- Butterbase vs PocketBase
Compare Butterbase with any tool side by side →
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Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
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