Find the free tierthat fits your stack.

Sherlo

Sherlo is a visual regression testing tool for React Native. It screenshots Storybook stories on iOS and Android simulators in the cloud, compares each run against the last approved version, and presents visual diffs for review before changes are shipped.

Lastest

Lastest is a visual regression testing tool that records browser flows, replays them in CI, and compares approved baselines against current runs across pixel, structural, and perceptual diff engines.

OpenWebhook

OpenWebhook is a stateless webhook inspector that generates a unique URL for receiving HTTP requests in the browser. It shows incoming requests in a live view and keeps the latest 200 events locally in the browser, with no server-side history by default.

telemetry.dev

telemetry.dev is an LLM observability platform for AI applications and agents. It collects traces that group model calls, tool steps, retrievals, logs, metrics, and metric data points, with support for SDKs and OpenTelemetry/OTLP exporters.

Atomic Mail

Atomic Mail is an email API for AI agents that exposes inbox registration and message handling through JMAP, REST, MCP, and an AgentSkill CLI. The service lets agents create inboxes, read mail, send m...

Ironfang Render

Ironfang Render is a rendering API for generating screenshots, PDFs, dynamic images, QR codes, captioned clips, and scrolling website previews from URLs, raw HTML, or structured JSON. It exposes a sta...

Doqlo Bulk Fill

Doqlo Bulk Fill is a PDF form workflow tool that maps PDF fields to CSV columns, previews rows, and exports one completed PDF per row. It supports fillable PDF forms and reusable PDF layouts, with data imported from Excel, Google Sheets, Airtable exports, CSV files, or API-driven automation.

XFlux is an X/Twitter data API that provides REST endpoints for public profile lookup, search, timelines, and single-tweet retrieval. It also includes account monitors that poll public accounts and can send signed HTTP webhooks when new tweets are detected on paid plans.

Layerbase

Layerbase is a managed database platform that runs 19 engines, including PostgreSQL, MySQL, Redis, SQLite, FerretDB, DuckDB, ClickHouse, Qdrant, QuestDB, InfluxDB, and Weaviate. It provides cloud-host...