DevToys helps in daily tasks like formatting JSON, comparing text, testing RegExp. No need to use many untruthful websites to do simple tasks with your data.
Contains some handy tools like a Json to Yaml and Yaml to Json converter, JWT Decoder, base64 encoder/decoder, etc.
Windows only, but a fork for Mac is also available.
DevToys →
DevToys Source (GitHub) →
DevToys for Mac →
(via Freek)