Online tools and services

My personal recommendation of useful online tools and services

Posted July 19, 2022 by Adrian Wyssmann

Cloud Services

See - A list of interesting services (XaaS) which offer free tiers for developers and small teams.


Url Description ASCII stands for American Standard Code for Information Interchange contributor covenant The quick and simple editor for cron schedule expressions by Cronitor Create useful .gitignore files for your project Get summaries (also known as abstracts)
AdminForge Offers some free services like tt-rrs or notebin

Regular Expressions

Url Description one of the largest regex testing services in the world RegExr is an online tool to learn, build, & test Regular Expressions (RegEx / RegExp)
Cyrilex Cyrilex is a visual regex tester


Url Description
ExtendsClass JSON Validator JSON Schema Validator and Generator
ExtendsClass XSD Validator Online XSD Validator and Generator
ExtendsClass XPath Tester XPath Tester
ExtendsClass JSONPath Tester JSONPath Tester

Design Resources

Url Description Simply beautiful open source icons Copy and paste emojis for Twitter, Facebook, Slack, Instagram, Snapchat, Slack, GitHub, Instagram, WhatsApp and more. Use Emoji Classic on older systems.
logo repository Repository of logos

Time Conversion

Url Description Epoch & Unix Timestamp Conversion Tools
Time Zone Converter Time Difference, Current Local Time and Date of the World’s Time Zones
Werktagumrechung (CH) Calculation of Workdays in Switzerland


Url Description Epoch & Unix Timestamp Conversion Tools


Url Description
Hetzner Server Auction Server hardware can be reused even if a product is terminated. This is reasonable in terms of both economic and ecological aspects. Benefit from this advantage.


Url Description
awesome-cheatsheets Awesome cheatsheets for popular programming languages, frameworks and development tools. They include everything you should know in one single file

see also list of tools