List of free secrets-manager stuff for developerππ½
If you're looking for all programming tools around secrets-manager (not just free). Check this page List of secrets-manager Programming Tools

Doppler
Doppler is the easiest way to securely manage all your environment variables in one encrypted place. No more sharing secrets over Slack or copying .env files.
Tag: app-configuration, secrets-manager
Unlimited Users Unlimited Secrets Secrets Referencing

Dotenv
Sync your .env files, quickly & securely. Stop sharing them over insecure channels like Slack and email, and never lose an important .env file again. From the same people that pioneered dotenv - trusted by more than 2.5 million developers.
Tag: app-configuration, secrets-manager
Unlimited secrets Unlimited projects Slack notifications Partner integrations Multiple environments Custom environments User access controls Version history
Infisical | Open Source SecretOps
OPEN SOURCE,END-TO-END ENCRYPTED,EASY-TO-USE, tool that lets you securely sync secrets and configs across your team, devices, and infrastructure
Tag: app-configuration, secrets-manager
Up to 10 projects Up to 5 members All Integrations End-to-end encryption Forum Support