- Add support for KDBX 4.0, Argon2 and ChaCha20 [#148, #1179, #1230, #1494]
- Add SSH Agent feature [#1098, #1450, #1463]
- Add preview panel with details of the selected entry [#879, #1338]
- Add more and configurable columns to entry table and allow copying of values by double click [#1305]
- Add KeePassXC-Browser API as a replacement for KeePassHTTP [#608]
- Deprecate KeePassHTTP [#1392]
- Add support for Steam one-time passwords [#1206]
- Add support for multiple Auto-Type sequences for a single entry [#1390]
- Adjust YubiKey HMAC-SHA1 challenge-response key generation for KDBX 4.0 [#1060]
- Replace qHttp with cURL for website icon downloads [#1460]
- Remove lock file [#1231]
- Add option to create backup file before saving [#1385]
- Ask to save a generated password before closing the entry password generator [#1499]
- Resolve placeholders recursively [#1078]
- Add Auto-Type button to the toolbar [#1056]
- Improve window focus handling for Auto-Type dialogs [#1204, #1490]
- Auto-Type dialog and password generator can now be exited with ESC [#1252, #1412]
- Add optional dark tray icon [#1154]
- Add new "Unsafe saving" option to work around saving problems with file sync services [#1385]
- Add IBus support to AppImage and additional image formats to Windows builds [#1534, #1537]
- Add diceware password generator to CLI [#1406]
- Add --key-file option to CLI [#816, #824]
- Add DBus interface for opening and closing KeePassXC databases [#283]
- Add KDBX compression options to database settings [#1419]
- Discourage use of old fixed-length key files in favor of arbitrary files [#1326, #1327]
- Correct reference resolution in entry fields [#1486]
- Fix window state and recent databases not being remembered on exit [#1453]
- Correct history item generation when configuring TOTP for an entry [#1446]
- Correct multiple TOTP bugs [#1414]
- Automatic saving after every change is now a default [#279]
- Allow creation of new entries during search [#1398]
- Correct menu issues on macOS [#1335]
- Allow compilation on OpenBSD [#1328]
- Improve entry attachments view [#1139, #1298]
- Fix auto lock for Gnome and Xfce [#910, #1249]
- Don't remember key files in file dialogs when the setting is disabled [#1188]
- Improve database merging and conflict resolution [#807, #1165]
- Fix macOS pasteboard issues [#1202]
- Improve startup times on some platforms [#1205]
- Hide the notes field by default [#1124]
- Toggle main window by clicking tray icon with the middle mouse button [#992]
- Fix custom icons not copied over when databases are merged [#1008]
- Allow use of DEL key to delete entries [#914]
- Correct intermittent crash due to stale history items [#1527]
- Sanitize newline characters in title, username and URL fields [#1502]
- Reopen previously opened databases in correct order [#774]
- Use system's zxcvbn library if available [#701]
- Implement various i18n improvements [#690, #875, #1436]
Introduce missing CustomData-attributes of KDBX4 format to allow
storing of plugin data for groups and entries - adopt Metadata to use
the same storage mechanism
Add simple view for CustomData as part of EditWidgetProperties
Tracking of CustomData-Modification using SIGNAL-SLOT update-mechanism
