1Password - 1Password can create strong, unique passwords for you, remember them, and restore them, all directly in your web browser.
Notopass - Share your accounts without giving username/password
ClockTweets - Schedule, analyze, and stalk challengers on Twitter
LessNoise - Recommendations on who to unfollow on Twitter
SuperTokens - Open Source User Authentication - An Alternative to Auth0 / Firebase Auth / AWS Cognito
ilo - Premium Twitter analytics