Best Free Developer Tools 2026

75K MAU free BaaS —€” Firebase alternative with auth, database, storage, and functions

Open-source Backend-as-a-Service with authentication, database, storage, and serverless functions. Free cloud tier includes 75,000 monthly active users, 2 GB storage, 750,000 function executions, and 5 GB bandwidth. No credit card required.

Free uptime monitoring with 100GB logs —€” saves $20/mo over Datadog

Uptime monitoring, log management, and status pages with generous free tier.

Free open-source Postman alternative —€” Git-native, offline-first, no account needed

Open-source API client for testing REST, GraphQL, and WebSocket APIs. Git-native collaboration, offline-first, with collection-level authentication and pre-request scripts. No account required. MIT licensed.

Free unlimited AI autocomplete in 70+ IDEs -- Copilot alternative with zero cost for individuals

AI-powered code autocomplete and chat. Free tier for individuals gives unlimited autocompletions and basic chat across 70+ IDEs. No credit card required.

2,000 free completions + 50 chat messages/month —€” industry-standard AI coding assistant, no credit card needed

AI code completion and chat assistant. Free tier includes 2,000 code completions per month and 50 chat messages per month. Supports VS Code, JetBrains, Neovim, and other IDEs. No credit card required.

10K metric series + 50GB logs + 50GB traces free —€” full-stack observability at zero cost

Full-stack observability platform with Grafana dashboards. Free tier includes 10,000 active series metrics (14-day retention), 50 GB logs, 50 GB traces (7-day retention), and 3 team members. Built-in alerting, on-call management, and incident response. No credit card required.

Free open-source API testing —€” Postman alternative with zero cost

Open-source API development platform for testing REST, GraphQL, and WebSocket APIs.

Enterprise-grade feature flags free —€” unlimited flags, unlimited seats, 10M logs, no CC —€” industry standard

LaunchDarkly's free Developer tier includes unlimited seats, unlimited feature flags, 10M logs and traces, 5K session replays and errors, 5K AI assistant runs/month, 100 code references, and 14-day data retention. Enterprise-grade feature management platform. No credit card required.

Free $15/mo Postgres with branching —€” instant database branching for dev workflows

Serverless Postgres with branching, instant provisioning, and generous free tier.

Best free product analytics platform —€” 1M events/mo, session recordings, feature flags, surveys, all open-source, no CC

PostHog's generous free tier includes 1 million events/month, 5,000 session recordings, 1 million feature flag requests, 100K error tracking exceptions, 1,500 survey responses, and 50GB of logs. Open-source product analytics platform. No credit card required.

Best free internal tool builder —€” unlimited apps, 5 users, 500 workflow runs, 20h agents, no CC

Retool's free tier includes unlimited web and mobile apps, 500 workflow runs/month, 5GB database capacity, up to 5 users, 20 hours/month of Agents runtime, and 250 AI credits/month. Connect to any database or API to build internal tools. No credit card required. Self-hostable version available.

Free Postgres with auth, realtime, and edge functions —€” Firebase alternative

Hosted Postgres database with authentication, instant APIs, edge functions.