Best Free Postman Alternatives for API Testing in 2026
Postman deprecated the Scratch Pad and its no-login client cannot save collections. Bruno, Hoppscotch and Insomnia compared — licences and real free limits.
Convert between data formats, debug encodings, and test regular expressions. Written for developers, analysts, and anyone who has ever been handed a broken CSV.
Postman deprecated the Scratch Pad and its no-login client cannot save collections. Bruno, Hoppscotch and Insomnia compared — licences and real free limits.
Reorder the rows and a text diff calls every line changed. The free key-based tools that compare a million rows in seconds — qsv, csvdiff, daff, DuckDB.
No AI add-in for Excel is really free. The actual caps: Copilot needs a subscription, Ajelix gives 10 requests a month, Rows 5 — and what works instead.
The =AI() function in Sheets is not free. What actually is: Gemini API limits, ChatGPT and Claude, Julius and Rows — plus the privacy trade-off.
When and why to convert YAML to JSON. Covers Kubernetes configs, GitHub Actions, anchors, gotchas, and the best free tools.
Convert JSON arrays to spreadsheet-ready CSV format instantly. Handle nested objects, null values, and mixed schemas.
Convert special characters to percent-encoded format or decode %20 codes. Covers query strings, API parameters, and Unicode.
Encode text to Base64 for APIs, data URIs, and email. Decode JWT payloads and Base64 strings instantly.
Write, test, and debug regex patterns with real-time match highlighting. Includes syntax reference and common pattern library.
See added, removed, and changed lines highlighted side by side. Works for documents, code, contracts, and data files.