API Development Open Source Tools

Alternative toSendbird Chat

Self-hosted instant messaging platform for web and mobile apps

• 13,529 GitHub stars
• GPL-3.0Licence GPL-3.0
• #Chat

Alternative toAWS Amplify

Auto-generate infrastructure from your TypeScript or Go code

• 12,480 GitHub stars
• MPL-2.0Licence MPL-2.0

Alternative toElasticsearch Service (Elastic Cloud)

MySQL-wire search engine with full-text and real-time indexing

• 12,064 GitHub stars
• GPL-3.0Licence GPL-3.0
• #Database

Alternative toiMazing

Search and download IPA files for iOS, iPadOS, tvOS, and visionOS

• 11,806 GitHub stars
• MITLicence MIT

Alternative toShopify

Headless Symfony commerce for complex B2B and B2C stores

• 8,560 GitHub stars
• MITLicence MIT

Alternative toXano

One YAML file gives your app auth, CRUD, storage, and admin UI

• 7,595 GitHub stars
• MITLicence MIT
• #BaaS

Alternative toVercel

Next-generation unified JavaScript tooling infrastructure

• 6,409 GitHub stars
• MITLicence MIT

Alternative toTwilio

Self-hosted WhatsApp REST API with multi-account and webhook support

• 4,937 GitHub stars
• MITLicence MIT
• #Chatbots

Alternative toAmazon Managed Blockchain

Blockchain database with high throughput and low latency

• 4,033 GitHub stars
• Apache-2.0Licence Apache-2.0
• #Database

Alternative toHookdeck

Webhook platform with delivery guarantees, retries, and signing

• 3,457 GitHub stars
• MITLicence MIT