Great Downloader easy to use can convert into multiple file formats. Fast and impressive
Subtitle Edit - Free subtitle editor with visual sync, time adjustments etc.Subtitle Edit Online · Subtitle Edit Videos · Subtitle Edit 3.
Video DownloadHelper - Browser extension to download videos from the Web
Aegisub - Aegisub is a free, cross-platform open source tool for creating and modifying subtitles. Aegisub makes it quick and easy to time subtitles to audio, and features many powerful tools for styling them, including a built-in real-time video preview.
youtube-dl-gui - A cross platform front-end GUI of the popular youtube-dl written in wxPython.
Time Adjuster - It's Windows application that can: Make your subtitles to appear earlier or later. Convert your subtitle files into other formats. SYNCHRONIZE text with video VERY EASY ! Join & split subtitle files.
Youtube Video and Audio Downloader - Download YouTube videos in all available formats and extract the original audio files.