Xpdf Tools
Extract information from PDF documents
Software QA Tools
Pa11y
Pa11y is your automated accessibility testing pal.
Xournal++
for annotating PDF documents
Greenshot
Greenshot - a free screenshot tool optimized for productivity
SoapUI
SoapUI is an automated testing tool for SOAP and REST APIs. Mostly replaced by Postman - useful if you prefer foss. Commercial version available
OWASP Zed Attack Proxy
Run basic security checks against your web application or api.
big list of naughty strings
The Big List of Naughty Strings is a list of strings which have a high probability of causing issues when used as user-input data.
Test Data Service
Test data service to create random persons with valid address, phone number, bank account, credit card and avatar image for software tests.