Convex

Reactive backend platform with a document database, server functions, and realtime sync.

Overview

Convex is a reactive backend platform designed to handle modern application requirements including real-time synchronization, AI agent workloads, and complex distributed systems. It provides an integrated suite of tools—database, serverless functions, file storage, text and vector search, workflows, and authentication—all built around TypeScript with end-to-end type safety.

The platform emphasizes developer experience with features like automatic caching and scaling, ACID transactions, and zero-glue integration. Convex is built by former Dropbox engineers who managed exabyte-scale distributed systems, bringing production-grade reliability to applications from prototypes to enterprise deployments.

Convex offers flexible pricing from a free tier for personal projects to professional and enterprise plans, with support for open-source projects and startups.

Key features

Reactive database with real-time sync
Serverless functions in TypeScript
File storage and text/vector search
Workflow orchestration with checkpointing
80+ OAuth integrations
ACID transactions
Automatic caching and scaling
AI agent components
Open-source components library

Pros

All-in-one backend eliminates glue code
End-to-end type safety catches errors early
Built-in real-time synchronization
ACID transactions prevent data corruption
Automatic scaling handles traffic spikes
Strong team with distributed systems expertise
SOC 2 Type II and HIPAA compliant
Free tier suitable for prototyping

Cons

Vendor lock-in to Convex platform
Learning curve for developers unfamiliar with reactive patterns
Limited to TypeScript/JavaScript ecosystem
Enterprise features require custom pricing
Self-hosting available but limited compared to managed service

Use this if

You need a fully integrated backend with real-time capabilities, are building AI agent applications, want end-to-end TypeScript type safety, or are a startup scaling from prototype to production.

Skip this if

You require multi-language backend support, need complete self-hosting control, prefer traditional REST/GraphQL APIs, or are locked into non-JavaScript ecosystems.

Best for

Building AI agent applicationsReal-time collaborative appsStartups moving from prototype to productionFull-stack TypeScript developmentApplications requiring ACID transactionsTeams needing end-to-end type safety