Tools

Bookmark of frequent used online free tools.

Development

• Godbolt C++ online compiler
• Visualize bash commands
• Crontab generator
• MIPS instruction converter
• Regex tester

Writing

• Real time PlantUML editor
• Ascii Drawing
• Table generator (for LaTeX, Markdown, etc)

Network

• Check TCP/UDP port status from external network
• Network speed test

Trading

• QuikStrike - example options and futures table

Scientific

• Symbolab Math solver/calculator
• Matrix solver

PC

• Hard Drive Database: hard drive comparison and speclist.

Other Tools

• FCC ID checker Database: product information and manuals.
• Internation parcel tracker (especially good for Chinese parcels)

Others

• PDF unlocker
• PDF to MS Word converter
• Keyboard tester

LOL

• Fake name generator

Email me if you have better ones!