Online tools and services

Cloud Services

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

Unsorted

UrlDescription
asciitable.comASCII stands for American Standard Code for Information Interchange
contributor-covenant.orgcontributor covenant
crontab.guruThe quick and simple editor for cron schedule expressions by Cronitor
gitignore.ioCreate useful .gitignore files for your project
getabstract.comGet summaries (also known as abstracts)
AdminForgeOffers some free services like tt-rrs or notebin

Regular Expressions

UrlDescription
regex101.comone of the largest regex testing services in the world
regexr.com/RegExr is an online tool to learn, build, & test Regular Expressions (RegEx / RegExp)
CyrilexCyrilex is a visual regex tester

Validators

UrlDescription
ExtendsClass JSON ValidatorJSON Schema Validator and Generator
ExtendsClass XSD ValidatorOnline XSD Validator and Generator
ExtendsClass XPath TesterXPath Tester
ExtendsClass JSONPath TesterJSONPath Tester

Design Resources

UrlDescription
feathericons.com/Simply beautiful open source icons
getemoji.comCopy and paste emojis for Twitter, Facebook, Slack, Instagram, Snapchat, Slack, GitHub, Instagram, WhatsApp and more. Use Emoji Classic on older systems.
logo repositoryRepository of logos

Time Conversion

UrlDescription
epochconverter.comEpoch & Unix Timestamp Conversion Tools
Time Zone ConverterTime Difference, Current Local Time and Date of the World’s Time Zones
Werktagumrechung (CH)Calculation of Workdays in Switzerland

APIs

UrlDescription
epochconverter.comEpoch & Unix Timestamp Conversion Tools

Hosting

UrlDescription
Hetzner Server AuctionServer 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.

Cheatsheets

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

see also list of tools