Find the free tierthat fits your stack.

XFlux is an X/Twitter data API that provides REST endpoints for public profile lookup, search, timelines, and single-tweet retrieval. It also includes account monitors that poll public accounts and can send signed HTTP webhooks when new tweets are detected on paid plans.

Layerbase

Layerbase is a managed database platform that runs 19 engines, including PostgreSQL, MySQL, Redis, SQLite, FerretDB, DuckDB, ClickHouse, Qdrant, QuestDB, InfluxDB, and Weaviate. It provides cloud-host...

CoCalc is a hosted collaborative computing platform for working with files, notebooks, terminals, and running services in a shared project environment. It includes an integrated AI agent workflow wher...

inspect.software

inspect.software is a public record of open-source software health. It publishes versioned inspection reports for repositories, covering maintainability, engineering quality, security posture, ecosystem adoption, and governance under a documented methodology.

Conduit

Conduit is a hosted SMTP-to-webhook gateway that receives inbound email and forwards each message to an application as an HTTP POST. It parses the email, signs the request with HMAC-SHA256, and supports SMTP retry behavior so senders can retry on transient failures without polling or mail libraries.

flat.social

flat.social is a browser-based virtual meeting platform that lets participants move around a shared space, talk with spatial audio, and join video rooms without installing software. It supports screen sharing, Q&A, whiteboards, and interactive activities inside customizable maps and room layouts.

CloudCertPrep

CloudCertPrep is a free, open-source web application for AWS certification practice exams. It provides full-length timed mock exams, domain-by-domain practice, per-question explanations, exam history, and progress tracking for supported certifications.

BackupDrill

BackupDrill is a Supabase backup service that connects to a project, creates a read-only backup role, and streams database backups to the user's own storage. It writes standard pg_dump backups to Goog...

CodeTrain

CodeTrain is a Socratic AI coding tutor that teaches developers on their own codebase by breaking a task into small steps, asking questions, and checking each line against runnable tests. Lessons run ...