iOS 8, released to the public earlier today, included a slew of new APIs for developers. One of those APIs opened up Touch ID to third-party apps, letting developers use the fingerprint scanner for authentication purposes within apps.

Quite a few apps have been updated to take advantage of Touch ID integration, replacing passwords and PIN codes. We've gathered up a comprehensive list of the most popular apps that now use Touch ID, which you can find below.

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- 1Password (Free) [Direct Link] - Password management app 1Password allows Touch ID to replace a Master Password, providing access to the app.

- LastPass (Free) [Direct Link] - Like 1Password, LastPass uses Touch ID to protect a user's LastPass vault. It replaces the Master Password.

- Amazon App (Free) [Direct Link] - The newly updated Amazon app for iOS 8 allows users to sign into their Amazon accounts using Touch ID instead of a password.

- Discover Mobile (Free) [Direct Link] - Banking app Discover Mobile lets users log into their accounts using Touch ID instead of a password.

- Evernote (Free) [Direct Link] - Evernote allows Evernote premium users who have protected their accounts with a passcode to log in with Touch ID instead of a number.

- Mint (Free) [Direct Link] - Money management app Mint allows users to substitute Touch ID for a passcode when logging into their Mint accounts.

- Scanner Pro ($6.99) [Direct Link] - Scanner Pro's newly updated iOS 8 app lets users protect their scanned information with Touch ID.

- Simple (Free) [Direct Link] - Banking app Simple lets users log into their bank accounts with Touch ID.

- Lowe's (Free) [Direct Link] - The mobile app for home improvement store Lowe's allows users to log into their MyLowe's personal accounts.

- Day One ($4.99) [Direct Link] - Day One allows users to unlock their journals with Touch ID, replacing a passcode.

- ETrade* (Free) [Direct Link] - ETrade has been updated with Touch ID authentication, which allows users to enter the app through fingerprint verification rather than a password.

- Keeper Password Manager (Free) [Direct Link] - This password management app is now able to use Touch ID fingerprint authentication in place of a master password.

Other apps with Touch ID integration: Yplan, Memoir, eHarmony

These are just a sampling of the apps that have integrated Touch ID so far. Additional app developers will likely be rolling the feature into their apps in the near future, now that iOS 8 is widely available. Want more iOS 8 info? Make sure to check out our iOS 8 roundup, our iOS 8 Hidden Features roundup, our list of apps with widgets in Notification Center, and our list of third-party keyboards.