Classify
Encrypting & decrypting text messages
Security APIs
19 free APIs with no signup and no API key. Data from public-apis (MIT).
CSR.plus
Generate certificate signing requests and private keys without OpenSSL
dead-drop
Ephemeral zero-knowledge encrypted data sharing
Dehash.lt
Hash decryption MD5, SHA1, SHA3, SHA256, SHA384, SHA512
EmailRep
Email address threat and risk prediction
Escape
An API for escaping different kind of queries
FilterLists
Lists of filters for adblockers and firewalls
Hashable
A REST API to access high level cryptographic functions and methods
IPLogs
Free VPN, proxy, Tor and datacenter IP detection. 13 sources, active probing
Microsoft Security Response Center (MSRC)
Programmatic interfaces to engage with the Microsoft Security Response Center (MSRC)
Mozilla http scanner
Mozilla observatory http scanner
Mozilla tls scanner
Mozilla observatory tls scanner
National Vulnerability Database
U.S. National Vulnerability Database
Passwordinator
Generate random passwords of varying complexities
PhishStats
Phishing database
SSL Labs
Deep SSL/TLS server analysis with A+ to F grading
UK Police
UK Police data
URLhaus
Database of malicious URLs used for malware distribution
Virushee
Virushee file/data scanning
← All categories · HTTPS/CORS badges are as listed upstream and may drift. The linked docs are authoritative.