A
Artillery
Modern load testing toolkit
TestingOpen SourceOptional Login
★★★★★
—Explore Directory
1096 services indexed — free to search and explore
Search the full directory — 100% free
View →
D
Down For Everyone Or Just Me
Website status checker
CheckersFreeNo Login
★★★★★
—L
Locust
Python load testing framework
TestingOpen SourceNo Login
★★★★★
—P
Prettier Playground
Code formatter playground
FormattersFreeNo Login
★★★★★
—W
W3C Markup Validator
HTML markup validation service
ValidatorsFreeNo Login
★★★★★
—K
K6
Load testing for developers
TestingOpen SourceOptional Login
★★★★★
—B
Bruno
Offline Git-friendly API client
API ToolsOpen SourceNo Login
★★★★★
—E
Email Validator
Validate email addresses
ValidatorsFreeNo Login
★★★★★
—H
Hoppscotch
Open-source API client
API ToolsOpen SourceOptional Login
★★★★★
—P
Password Generator Online
Secure password generator
GeneratorsFreeNo Login
★★★★★
—P
Postman Flows
Visual API workflows
API ToolsFreemiumLogin Required
★★★★★
—W
WorldTimeBuddy
Time zone converter
ConvertersFreeNo Login
★★★★★
—C
Charles Proxy
HTTP proxy and monitor
ParsersPaidNo Login
★★★★★
—U
UnitConverters.net
Unit conversion tool
ConvertersFreeNo Login
★★★★★
—F
Fiddler
Web debugging proxy
ParsersFreemiumNo Login
★★★★★
—C
Calculator Soup
Free online calculators
CalculatorsFreeNo Login
★★★★★
—W
Wireshark
Network protocol analyzer
ParsersFreeNo Login
★★★★★
—O
Omni Calculator
Online calculators for everything
CalculatorsFreeNo Login
★★★★★
—F
Fail2ban
Intrusion prevention framework
Malware CheckersOpen SourceNo Login
★★★★★
—B
Budibase
Build internal tools fast
Internal ToolsOpen SourceLogin Required
★★★★★
—A
Appsmith
Open-source low-code platform
Internal ToolsOpen SourceLogin Required
★★★★★
—C
CrowdSec
Collaborative security engine
Malware CheckersOpen SourceOptional Login
★★★★★
—T
Tally
Free form builder
FormsFreemiumLogin Required
★★★★★
—V
Vault
Secrets management by HashiCorp
Authentication ToolsOpen SourceOptional Login
★★★★★
—