Best Tools for Startups 2026

Buttercup

Open-source, end-to-end encrypted password manager with secure note-taking and file storage.

Synchronize secrets from external providers into Kubernetes.

Secure passkey and password manager with user-controlled data storage on your cloud.

Open-source, end-to-end encrypted password and secret management for teams of any size.

Secrets management platform

Open-source identity and access management

Open source password manager

Turn ON privacy with secure, end-to-end encrypted emails, calendars, and contacts.

Open-source secret management platform for modern teams

Multi-factor authentication for enterprises

Password manager with VPN

Encrypted password manager from Proton

Securely store, manage, and autofill passwords and sensitive data for personal and business use.

Open-source authentication infrastructure