Convex
Reactive TypeScript backend with database, functions and file storage
466 tools in our directory are listed as freemium, from 30 sections: Productivity & Collaboration (36), No-Code & Automation (35), Generative AI (28), Backend Services (27) and 26 more sections.

Reactive TypeScript backend with database, functions and file storage

Managed headless CMS for content teams running many sites

Online courses, certificates and degrees from universities

Track code coverage history and see uncovered lines in CI



Free online book on building your own programming language

Monitoring for cron jobs, heartbeats, websites and APIs





Cloud monitoring for infrastructure, applications and logs


Online tool for making charts, maps and tables without code

Headless CMS with a GraphQL API for web content at scale

Draw database ER diagrams by writing simple DBML code

Translation API for text and documents, with a free developer plan

Deploy platform for JavaScript and TypeScript apps at the edge

Hosted builds, CI runners, caches and registry for faster pipelines


Desktop app for running and reviewing several AI coding agents

Visual platform for building AI agents, workflows and RAG apps


DMARC management platform with free domain and record checker tools


HTML to PDF API that renders pages with the Prince PDF engine

Widely used e-signature service for sending and signing documents

Secrets manager that syncs credentials across apps, clouds and CI

No-code website builder with AI copy, images and a white-label CMS


In-memory data store that works with Redis and Valkey clients


AI builder for launching a small business website and tools


AI voice and audio platform for speech, music and voice agents

AI research assistant for finding, screening and summarizing papers

Hands-on full-stack web development workshops and courses

Note taking app for notes, tasks, calendar links and web clips

Guides on CSS layout that let the browser do the work

Currency exchange rate API for 165 currencies with a free plan

European cloud for VMs, Kubernetes, storage and databases

Receipt scanning, expense reports and corporate cards

AI meeting notes, action items and summaries with admin controls

Generate SDKs, API docs and a CLI from an OpenAPI spec


S3-compatible object storage with free egress and a built-in CDN

Form builder with AI-generated forms, scheduling and secure responses
Looking for something else? Browse the full directory.