Once in a while I find really useful webservices that follow the Unix philosophy: Do one thing and do it well (source). My colleagues at Netlight and Johannes helped me with some of them (thank you 🙂).
- Charcounter Text
- Count how many characters a text has.
- JSfiddle JavaScript
- Make short examples of HTML+CSS+JS easy to share / execute
- RegEx Pal
- Test regular expressions (I miss a possibility to store and share them).
Alternatives: regex101.com - Gist Sharing
- Share single-file snippets of code / text.
Alternatives: Pastebin - requestb.in
- Test / inspect if your service sends the right requests.
Alternatives: httpbin.org, hookbin.com, mockbin.org
Reference: List of HTTP status codes - StackEdit.io
- Write Markdown (+ LaTeX).
Alternatives: hackmd.io - MathURL
- Math in LaTeX to PNG
- color.adobe.com
- Color Picker
- Diffchecker.com
- Compare text differences between two text files.
Local alternative: Meld - bundlephobia.com
- Find the cost of adding a npm package to your bundle
- jsonformatter.org
- Format and validate your JSON data
Alternatives: jsonformatter.curiousconcept.com - beautifier.io JavaScript
- Format minified or messy JavaScript code
- Unicode.party
- Search engine for emoticons
- truben.no/table
- Create tables for HTML, LaTeX, Markdown, reStructuredText, ...
- pep8online.com Python
- Check a file for PEP8 compliance.
- deepl.com
- Translation between some common languages.
Alternatives: Google Translate
Platforms
The following are not small single-purpose tools, but platforms I have used for my projects:
- Code: GitHub for version control, Docker Hub for container images
- Hosting: DigitalOcean for cloud servers, Amazon S3 for storage, Amazon EC2 for cloud computing
- Domains: Namecheap is relatively cheap and very easy to use
- Crowdsourcing: Amazon Mechanical Turk lets human workers do small tasks, e.g. labeling data for machine learning
- Communication: Slack for team chat
- Design: logotournament.com to get a custom, high quality logo (see my experience)