No moat. Still in business.
Software directory for those who don’t want to rebuild, own the updates, the bugs, the support.
- HTTP Toolkit
Desktop app that lets developers capture, inspect, edit and mock HTTP and HTTPS traffic for debugging and testing.
Since 2019
Developer tools · Developers
- MLJAR Studio
Desktop data analysis app where you ask about your data in plain English and get Python code, charts and notebooks run on your computer.
Since 2017
Data and spreadsheets
- pbar.io
Lets developers share live progress of scripts and jobs through a link, via an API or a tqdm replacement.
Uptime and monitoring · Developers
- LogDog
Watch network calls, logs and events from your iOS or Android app live in a browser, and mock API responses while testing.
Developer tools · Developers
- Mockfly
Frontend teams can spin up hosted fake REST endpoints, import OpenAPI or Postman files, and fill responses with fake data.
Free plan · Developer tools · Developers
- Quadratic
Spreadsheet that links to databases and files and lets AI write the formulas, Python and charts for you.
Since 2023
Data and spreadsheets
- Mocko
Developers can mock or proxy HTTP endpoints at shareable public URLs to test against APIs that are not finished yet.
Free · Developer tools · Developers
- AIR Blackbox
Records every AI agent decision in a signed, tamper-evident log so teams can show regulators what their AI did under the EU AI Act.
Since 2026
Free plan · Developer tools · Developers
- Proxyman
Native HTTP debugging proxy for capturing, decrypting and mocking web and mobile app traffic, with an MCP server for AI agents.
Developer tools · Developers
- Beeceptor
Spin up hosted mock servers from OpenAPI, SOAP, GraphQL or gRPC specs so teams can test without the real backend.
Since 2025
Free plan · Developer tools · Developers
- DBLift
Runs versioned SQL and Python database migrations with dry runs, history checks and rollbacks, for Python teams.
Since 2026
Free plan · Developer tools · Developers
- Echolon
Open-source API client that keeps collections as local files synced through Git, for testing REST and WebSocket APIs offline.
Free plan · Developer tools · Developers
- ReqRes
Mac app that intercepts HTTP and HTTPS traffic so developers can inspect it, mock endpoints and serve local files as responses.
Free plan · Developer tools · Developers
- Overcast
Pools GPUs and CPUs from many cloud providers and your own servers so developers can run large data jobs in one place.
Since 2026
Developer tools · Developers
- LogDog
Watch network calls, logs and events from iOS and Android test devices live, mock responses and share sessions with your team.
Since 2025
Developer tools · Developers
- Routebase
Keeps API specs, mock servers, tests and published docs in step from a single spec, for software teams.
Since 2026
Free plan · Developer tools · Developers
- Runcell
An AI agent inside Jupyter that writes and runs Python cells, reads the results and fixes errors during data analysis.
Since 2025
Free plan · Developer tools · Developers
- FastAPI Cloud
Hosting for Python FastAPI apps that deploys with one command and handles scaling and HTTPS for developers.
Since 2026
Developer tools · Developers