Curated
MXToolbox
Online DNS, mail server and blacklist lookup tools
Email and EncryptionDNS and email diagnostics
Alternatives to dmarcian
12 tools like dmarcian, chosen by what they do. About dmarcian
Open source
Tuta
Encrypted email, calendar and contacts with a free plan
Email and EncryptionEncrypted email and calendar
Open source
VeraCrypt
Free open source disk encryption for Windows, Mac and Linux
Email and EncryptionDisk encryption software
Open source
Cryptomator
Open source encryption for files stored in cloud drives
Email and EncryptionEncrypt cloud files
Open source
Signal
Private encrypted messenger for text, voice and video calls
Email and EncryptionPrivate encrypted messenger
Curated
Cloudron
Self-hosting platform with an app store, updates and a mail server
Self-Hosted PaaSRun apps on your own server
Free trial
HashiCorp Vault
Stores and controls access to secrets, keys and certificates
Code SecuritySecrets management
Open source
OpenBao
Open source fork of HashiCorp Vault for managing secrets
Identity and SecretsOpen source secrets vault
Free
Have I Been Pwned
Check if your email or password appeared in a known data breach
Web SecurityCheck for data breaches
Freemium
SonarQube
Checks code quality and security in every change, human or AI
Code SecurityCode quality and security
Curated
Bugcrowd
Crowdsourced bug bounty and penetration testing platform
Pentest and BountyCrowdsourced security testing