KeePass是一個高度安全和受歡迎的開源密碼管理器，用於以安全的方式存儲和管理密碼、用戶名和其他敏感信息。它由Dominik Reichl開發，適用於包括Windows、macOS、Linux和移動設備在內的各種平台。

KeePass 的其中一個主要特點是其強大的安全性。它採用了強加密算法（例如，AES, Twofish）來保護存儲的數據，確保只有擁有主密碼的授權用戶才能訪問他們的密碼。主密碼作為解鎖加密數據庫的主要密鑰。

KeePass 提供了用戶友好的界面，允許用戶使用文件夾和類別以結構化的方式組織密碼。此外，它還提供了密碼生成工具，幫助用戶創建複雜且獨特的密碼以增強安全性。

該軟體使用戶能夠快速搜尋特定密碼，並提供自動輸入等功能，允許自動填寫網站和應用程式的登錄表單。KeePass 還支援插件，擴展其功能並使其可自訂以滿足個人需求。

此外，KeePass 通過允許用戶將其加密的密碼數據庫存儲在各種存儲媒介上，例如本地磁碟、USB 驅動器或雲端存儲，強調了可攜性和可訪問性。這使得用戶能夠在不同設備上存取他們的密碼，同時保持安全和隱私。

總體而言，KeePass 是一個可靠且安全的密碼管理解決方案，有助於用戶整理和保護其敏感信息。

關鍵功能：

• 安全密碼儲存安全存儲和管理密碼。
• 強加密：使用先進的加密技術來保障資料安全。
• 主密碼和密鑰文件使用強密碼和可選金鑰文件訪問資料庫。
• 雙因素身份驗證 (2FA)：提供額外一層的安全保障。
• 自動鍵入功能自動輸入用戶名和密碼。
• 密碼生成器生成強而隨機的密碼。
• 整理密碼將密碼分類為組和子組。
• 搜尋和篩選快速找到特定條目。
• 自定義欄位：將額外資訊添加到條目中。
• 附件安全地將檔案附加到密碼條目。
• 安全功能：提供額外的安全選項。
• 跨平台: 可在各種操作系統上使用。
• 插件和擴充功能：透過附加功能延伸功能性。
• 進口與出口：輕鬆匯入/匯出密碼。
• 資料庫同步: 安全地跨設備同步資料庫。

• The estimated password quality (in bits) is now displayed on the quality progress bar, and right of the quality progress bar the length of the password is displayed.
• Auto-Type: before sending a character using a key combination involving at least two modifiers, KeePass now first tests whether this key combination is a registered system-wide hot key, and, if so, tries to send the character as a Unicode packet instead.
• Auto-Type: added workaround for Cygwin's default Ctrl+Alt behavior (which differs from Windows' behavior).
• Auto-Type: added {APPACTIVATE ...} command.
• {HMACOTP} placeholder: added support for specifying the shared secret using the entry strings 'HmacOtp-Secret-Hex' (secret as hex string), 'HmacOtp-Secret-Base32' (secret as Base32 string) and 'HmacOtp-Secret-Base64' (secret as Base64 string).
• {T-CONV:...} placeholder: added 'Uri-Dec' type (for converting the string to its URI-unescaped representation).
• Added placeholders: {URL:USERINFO}, {URL:USERNAME} and {URL:PASSWORD}.
• Added placeholders: {BASE}, {BASE:RMVSCM}, {BASE:SCM}, {BASE:HOST}, {BASE:PORT}, {BASE:PATH}, {BASE:QUERY}, {BASE:USERINFO}, {BASE:USERNAME}, {BASE:PASSWORD} (within an URL override, each of these placeholders is replaced by the specified part of the string that is being overridden).
• Added {NEWPASSWORD:/Profile/} placeholder, which generates a new password for the current entry using the specified password generator profile.
• Pattern-based password generator: the '^' character now removes the next character from the current custom character set (for example, [a^y] contains all lower-case alphanumeric characters except 'y').
• Enhanced syntax highlighting in the sequence field of the 'Edit Auto-Type Item' dialog.
• Added option 'Do not ask whether to synchronize or overwrite; force synchronization'.
• Added synchronization support for the group behavior properties 'Auto-Type for entries in this group' and 'Searching entries in this group'.
• Root group properties are now synchronized based on the last modification time.
• While saving a database, a shutdown block reason is now specified.
• Added 'Move to Group' menu in the 'Selected Entries' popup of the main entry list context menu.
• Items of dynamic menus (tags, strings, attachments, password generator profiles, ...) now have auto-assigned accelerator keys.
• As alternative to Ctrl+F, pressing F3 in the main window now displays the 'Find' dialog.
• Added UIFlags bit for hiding password quality progress bars and information labels.
• Enhanced system font detection on Unix-like systems.
• When using 'xsel' for clipboard operations on Unix-like systems, text is now copied into both the primary selection and the clipboard.
• Added '--version' command line option (for Unix-like systems).
• Plugins can now subscribe to an IPC event that is raised when running KeePass with the '-e:' command line parameter.
• Added workaround for .NET AutoWordSelection bug.
• Added workaround for Mono bug 10163; saving files using WebDAV now also works under Mono 2.11 and higher.
• Added workaround for Mono image tabs bug.
• Added workaround for Mono NumericUpDown drawing bug.

• Merged the URL scheme overrides and the 'Override all URLs' option into a new dialog 'URL Overrides'.
• Improved autocompletion of IO connection parameters using the MRU list (now treating the user name as filter).
• Improved interaction of IO connection trigger parameters and the MRU list.
• The master key prompt dialog now validates key files only when clicking [OK], and invalid ones are not removed automatically from the list anymore.
• Improved support for managing columns leftover from uninstalled plugins in the 'Configure Columns' dialog.
• If the 'Unhide Passwords' policy is turned off, the passwords column in the auto-type entry selection dialog is now unavailable.
• The entry list in the main window is now updated immediately after performing auto-type or copying data to the clipboard.
• Various list view performance improvements.
• The 'Searching entries in this group' group behavior properties are now ignored during resolving field references.
• Improved behavior in case of syntax errors in placeholders with parameters.
• Two-channel auto-type obfuscation: improved realization of clipboard paste commands.
• General main window keyboard shortcuts now also work within the quick search box and the database tab bar.
• Pressing Ctrl+Shift+Tab in the main window now always selects the previous database tab (independent of which control has the focus).
• Changed shortcut keys for moving entries/groups on Unix-like systems, due to Mono's incorrect handling of Alt (preventing key events) and navigation keys (selection updated at the wrong time).
• Auto-Type: improved modifier key releasing on Unix-like systems.
• Various code optimizations.
• Minor other improvements.

• A key-up event to the groups tree in the main window without a corresponding key-down event does not change the entry list anymore.