API middleware

10 reusable API middleware libraries across every platform — libraries, SDKs, and drop-in systems. You should never have to know which ecosystem it lives in.

• accessflow

  by bablsoft · Free · github

  Open-source database & API access governance platform A SQL, NoSQL, and API proxy that puts review, approval, and audit between your team and production data and services.

  WorkflowAPIDatabaseSecurity   Java

• Awesome-AI-resources

  by arpita612 · Free · github

  💻 Discover essential AI-driven tools, frameworks, and resources to enhance your development process and streamline your projects.

  AIAPI   Java

• demo-springboot-keycloak-auth-crud

  by nik1842812 · Free · github

  🔐 Secure your API with this Spring Boot demo using Keycloak for authentication, user registration, role management, and CRUD operations.

  AuthenticationAuthorizationAPIDatabase   Java

• first-run

  by alfaarizi · Free · github

  Embeddable customer-activation agent for small B2B SaaS companies

  AIUIMessagingAPI   Java

• github-ai-assistant

  by monuro · Free · github

  🤖 Boost your development workflow with this AI-powered GitHub command-line assistant for quicker and smarter coding.

  AIAPI   Java

• HueVista

  by VikramMali14 · Free · github

  Spring Boot 4 backend for HueVista — a live B2B AI paint-visualisation SaaS for Indian paint retail. 17 feature-sliced modules, 43 JPA entities, 479 tests, Razorpay billing, JWT + Google OAuth2, Flyway, Redis, S3.

  AuthenticationCloudAPI   Java

• motordesk-api

  by Studios-TKOH · Free · github

  Backend Spring Boot SaaS para lubricentros con facturacion electronica SUNAT, inventario, correlativos offline, RabbitMQ, PDFs A4/80mm y storage local/Google Drive.

  InventoryAuthenticationMessagingAPI   Java

• Protocol Buffers

  by Google · Free · BSD-3-Clause · middleware

  Language-neutral, platform-neutral mechanism for serializing structured data.

  SerializationAPI   C++JavaPythonGoC#JavaScript

• spector

  by spectrayan · Free · github

  Cognitive memory engine for AI agents. Biologically-inspired 4-tier cortex, Panama SIMD, MCP native. Java 25.

  AIMemoryAPI   Java

• SulphurAPI

  by CareBobo · Free · github

  🔍 Automate OWASP API Top 10 detection with SulphurAPI, a Burp Suite extension for reliable API security testing and advanced OpenAPI parsing.

  AutomationAPI   Java