Regshot is a small,free and open-source(GPL) registry compare utility that allows you to quickly take a snapshot of your registry and then compare it with a second one - done after doing system changes or installing a new software product. The changes report can be produced in text or HTML format and contains a list of all modifications that have taken place between snapshot1 and snapshot2. In addition, you can also specify folders (with sub filders) to be scanned for changes as well.

V1.8.2 20071103
! Change some calls to ANSI version(lstrcmp->strcmp...)
! Use risk . and .. compare
! Use HeapAlloc instead of GlobalAlloc,danger but slightly faster,see sourcecode
! html differ color from e0e0e0 to e0f0e0. Thanks Charles!
+ Add frech languagefixed,kazakh language.
+ Add new style browseforfolder by Belogorokhov Youri! (NT+)
+ Do not save setting to regshot.ini when there is no such ini file.( idea from "alan borer" in My msg board)
+ Fix crash bug in former version if start from cmd window
! minor changes and minor bug fixed
(Due to some issue,In this version the .exe is not shrinked ,so you may notice the size is 72K)

官網(wǎng)：
http://regshot.yeah.net
http://regshot.blog.googlepages.com/regshot

Regshot是個簡單，實用的注冊表比較工具，它通過兩次抓取注冊表而快速地比較出答案。可以將您的注冊表以純文本方式記錄下來，便于瀏覽；可以監(jiān)察Win.ini，System.ini中的鍵值；可以監(jiān)察您Windows目錄和 System 錄中文件的變化，為您手工卸載某些軟件創(chuàng)造條件。附帶源代碼。

V1.8.2 20071103
! 一些函數(shù)換成 ANSI 版本(lstrcmp->strcmp...)
! 使用了帶有冒險性質(zhì)的 . 和 .. 比較
! 使用了帶有冒險性質(zhì)的HeapAlloc()
! html 顏色替換 e0e0e0 to e0f0e0. Thanks Charles!
+ 增加和修改了幾種語言
+ 新的 browseforfolder 對話框 by Belogorokhov Youri! (NT+)
+ 如果regshot.ini不存在的話就不寫ini,這樣也許對某些人有用.
+ 修改了個崩潰,如果從命令cmd窗口啟動(不知道什么版本就存在了)
! 一些其他小修改和bug修復(fù).

Download: 注冊表比較工具RegShot v1.8.2 多國語言版
Download: Regshot 1.61e5 Final 漢化版