Best API & Backend Tools in 2026

Supabase

API & Backend

Open source Firebase alternative with Postgres, Auth, Storage, and Realtime.

Postman

API & Backend

All‑in‑one API platform for designing, testing, documenting and monitoring APIs.

ModelRush

API & BackendPaid

Hosted AI APIs for developers and product teams integrating text, image, video and voice generation. Pay by usage with prepaid API credits and explore models in a browser playground.

SnapDat

API & Backend

Pixel-perfect website screenshots and Open Graph card generation via a simple REST API.

EdgarKit

API & Backend

A real-time, structured JSON API for SEC EDGAR filings, providing sub-minute latency for insider trades and other financial data.

PDFPipe

API & Backend

A high-performance HTML to PDF API that delivers pixel-perfect documents in seconds with a flat pricing model.

SmoothAPI

API & Backend

Zero-dependency, dual-language API resilience and fault-tolerance library.

onsubmit.dev

API & Backend

Accept form submissions from any website without writing backend code, with instant notifications to Email, Telegram, Slack, and more.

APIClaw

API & BackendFreemium

APIClaw is a flat-rate, OpenAI-compatible API gateway for Claude, OpenAI, DeepSeek, Qwen, Kimi and GLM models. Point any SDK or coding agent at one base URL; 50 free trial requests, plans $19–$129/mo.

ReefAPI

API & BackendFreemium

ReefAPI is one gateway to 250+ live web-data APIs: e-commerce, social, real estate, jobs, travel, news, finance and company data. Clean JSON, free tier.

Naiza

API & BackendPaid

Naiza, built by Limaz in Riyadh, is an API-first fraud detection and AML screening platform. It returns explainable ALLOW, REVIEW or BLOCK decisions in real time.

Screenshot Render

API & BackendFree

Screenshot Render captures full-page and viewport screenshots of any URL via a simple API. Built for developers and SaaS teams who need reliable, high-quality website screenshots at scale.

codexhot.com

API & BackendPaid

热核算力 is a paid OpenAI-compatible GPT API gateway with verified GO, PLUS and PRO groups. Buy prepaid redemption vouchers from CNY 5, then pay for actual API usage; there is no free tier or subscription requirement.

Orisift

API & BackendFreemium

Orisift checks phone numbers, email domains, IP addresses and domains through one POST /v1/lookup endpoint and returns a verdict with its evidence.

Easy Site Control

Project ManagementPaid

Build your frontend while we handle everything backend - from databases and authentication to file storage, real-time features, and deployment. Complete infrastructure, zero DevOps.

Jev

AI Tools & PlatformsPaid

Jev by TypeSafe AI is a model API that takes state plus typed questions and returns Choice, Score and true/false answers with calibrated probabilities instead of generated text.

CPFHub.io

Developer ToolsFreemium

CPFHub.io is a REST API for Brazilian CPF data. Simple lookup returns name, gender and birth date (~150 ms typical). Real-time lookup checks situação cadastral and death year directly at Receita Federal. Bulk jobs, MCP server for AI agents, OpenAPI spec. Free plan: 50 credits/month, no card.