8 Best Free Open Source Subtitle Editor Software For Windows

Here is a list of best free open source subtitle editor software for Windows. These open source subtitle editors are completely free and you can even edit their source code without any restrictions. Through these software, you can create and edit subtitle files of various formats like SRT, ASS, TXT, SUB, XML, CSV, RTF,  etc. To edit a subtitle file, they offer editing area or timeline from where you can view all the subtitle text lines along with their times. You can manually select and edit the subtitle text in all these editors. Plus, option to change the subtitle text time is also present in most software to synchronize the subtitle text with video. In some editors, you get advanced synchronization features that let you adjust subtitle text time according to either video frame or video time.

In many software, you can even preview the edited subtitle text over the actual video. Plus, to further fine-tune the timing of a subtitle, you can use the audio waveform of a video file in some editors. In some editors, you also get a subtitle translation feature that lets you change the language of a subtitle file. To translate the language, these software use services like Google Translate, Bing Search, etc. After subtitle editing, you can easily save the edited subtitle file in its native or other supported subtitle file format.

These software also offer many additional tools such as split subtitle, merge subtitle, check spellings, batch convert files, etc. Go through the list to know more about these software.

My Favorite Open Source Subtitle Editor Software For Windows:

Subtitle Edit is my favorite software because it lets you edit subtitle files of almost every format. Plus, it lets you edit, synchronize, and preview subtitle text in real-time over a video.

You can also check out lists of best free Subtitle Video Player, Subtitles Adder, and Subtitle Maker software for Windows.

Subtitle Edit

Subtitle Edit is a free open source subtitle editor software for Windows. Through this software, you can easily edit subtitle files of various formats such as SRT, STL, ASS, SUB, CSV, RTF, PSL, VTT, UTX, and more. In it, you can also play a video to track and edit its subtitles in real-time. Other important features such as synchronization, delay to the subtitle, bridge gaps between subtitles are also present in it. Now, check out the main features of this software.

Main Features:

• List View: Using it, you can select a duration and edit the subtitle text present at that duration. In addition to that, you can move the subtitle of a specific duration to another duration.
• Waveform: This feature shows the audio waveform along with subtitle text present at that duration. This feature comes in handy to fine-tune the subtitle text with the audio waveform.
• Synchronization: In this software, you get two different subtitle synchronization features namely Point Synchronization and Visual Synchronization. Through point synchronization, you can adjust the single time point to change the position of the subtitle and adjust multiple time points to change both the position and speed of subtitle. The visual synchronization process is simple as it lets you synchronize subtitles according to the frames of a video.
• Auto-Translate: Using it, you can convert subtitles of one language to another language. To translate the subtitles, it uses Google translate service.

Additional Features:

• Spell Checker: Through this feature, you can find out all the subtitle spelling mistakes.
• Networking: Using it, you can join multiple users over the network to work on a project.
• Join Subtitles: Use it to join two or more subtitles to make a new one.
• Batch Convert: Through this feature, you can batch convert multiple subtitle files of different formats to a specific subtitle format like SRT, CSV, LRC, TXT, etc.

Final Thoughts:

It is one of the best free open source subtitle editor software because it offers all essential plus many advanced features to edit and modify a subtitle file.

Subtitle Workshop XE

Subtitle Workshop XE is another free open source subtitle editor software for Windows, macOS, and Linux. Through this software, you can edit a subtitle file, change the position of the subtitle text, and synchronize subtitle with the video. In it, you can also preview the edited subtitle within a video by using its video feature. Another good thing about this software is its ability to support subtitle files of various formats such as XML, TXT, SRT, SUB, JSS, XAP, XAS, and more. Let’s take a look at the main features of this software.

Main Features:

• Subtitle Video and Waveform: These features let you edit subtitles while viewing the audio waveform and video of the scene that you are editing. Plus, they help you fine-tune the subtitle according to the audio waveform to achieve perfect synchronicity between the subtitle text and sound.
• Main Editor: In the main editor of this software, you can view each line of the subtitle with its duration. From here, you can manually modify the text of the subtitle and duration of a subtitle line. This editor also offers multiple position and style tools through which you can adjust the font, color, and position of subtitle in a video.
• Info & Errors: This feature automatically finds and correct all the spelling and spacing errors of a subtitle file.

Additional Features:

• Batch Convert:  Use it to convert multiple subtitle files of different formats to a specific subtitle format.
• Join Subtitles: According to its name, it used to join two to more subtitle files into a new subtitle file.
• Translator: Use to translate the language of a subtitle file. It uses the Bing search service to translate the subtitle language.

Final Thoughts:

It is another capable and feature-rich open source subtitle editor that anyone can use to make necessary adjustments to a subtitle file.

Aegisub

Aegisub is yet another free open source subtitle editor software for Windows and macOS. It is another powerful subtitle editor that enables you to modify subtitles, adjust the timing of subtitles, styling, and position of subtitles. Plus, an advanced video preview feature to view the edited subtitle with video is also present in it. Like other similar software, it also supports multiple input and output subtitle file formats like STL, TXT, MKS, ASS, SSA, MKA, and more. Now, check out the main features of this software.

Main Features:

• Main Editor: In it, you can view all the subtitle text lines along with their duration. You can select any subtitle line or its duration to change or adjust its value. If you have loaded the video of the associated subtitle, then you can also view the visual scene and audio time for a specific subtitle text line.
• Video Player: This player helps you preview the changes in subtitle text over the actual video.
• Style Manager and Style Assistant: Through these features, you can change the font, color, alignment, and position of the text over the video.
• Timing: It is another simple tool through which you can adjust the timining of the subtitle file to match it with the audio or the scene of the video.
• Subtitle: In it, you can find multiple subtitle editing tools like insert line, duplicate line,  join lines, split lines, and more.

Additional Feature:

• Automation Manager: It contains multiple automated tasks through which you can quickly make karaoke templates, cleans tags from subtitle files, add edge blur to the subtitle, and more.

Final Thoughts:

It is yet another featured open source subtitle editor through which you can easily make desired modifications to a subtitle file.

Jubler

Jubler is the next free open source subtitle editor software for Windows, Linux, and macOS. Using it, you can edit text-based subtitle files of SRT, ASS, SSA, SUB, TXT, XML, and DFXP formats. Along with editing, you can also use this software to synchronize or accurately match subtitle text with audio and frames of the video. To do that, it lets you import and play the video with the subtitle. Now, check out the main features of this software.

Main Features:

• Main Editor: In the main editor, you can view all the lines of a subtitle file along with their time position that you can manually edit. Plus, an option to specify the start and end time of the subtitle according to the video is also present in it
• Edit: In this tab, you can get multiple editing tools through which you can cut subtitles, paste subtitles, insert subtitles, replace subtitles, and undo changes.
• Synchronize: Using it, you can synchronize the subtitle according to the time range of a video.
• Test subtitle from current position: After editing a specific line of the subtitle file, you can use this feature to view the modified subtitle line over the actual video.

After editing, you can easily save the subtitle file in its native format or in other supported subtitle file formats.

Additional Feature:

• Split File: Use it to split or divide a subtitle file into two or more parts.

Final thoughts:

It is an easy to use open source subtitle editor through which you can edit and synchronize a subtitle file.

Subtitle Processor

Subtitle Processor is one more free open source subtitle editor software for Windows. It is another good editor that allows you to edit the subtitle file and preview the edited subtitle over the actual video. However, it only works with subtitle files of SRT format. Now, check out the main features of this software.

Main Features:

• Subtitle Editor: It is the main subtitle editing section of this software that comes with two subtitle editing modes namely Frame Mode and Time Mode. Through frame mode, you can synchronize the subtitle text according to the frame of a video. On the other hand, in time mode, you can synchronize subtitle text according to the time duration of a video. In both the modes, you can also manually select and edit the text of a subtitle file.
• Editor Functions: It offers many functions through which you can split a subtitle text line into two parts, merge subtitle text lines, move the subtitle text position, scale subtitle text, and add transition effects between subtitle texts.
• Player: In it, you can play a video along with the edited subtitle to preview the edited subtitle over the actual video.

Additional Features:

• Translator: Using this section, you can create a translation of a subtitle file by manually adding the translation of each subtitle line in the Translator area.
• Text Corrections: It is basically a wrong spelling detector and corrector feature through which you can quickly find and correct all the spelling mistakes in a subtitle file.

Final Thoughts:

It is another feature-rich open source subtitle editor software through which you can create, edit, and synchronize subtitle files.

AHD Subtitles Maker

AHD Subtitles Maker is yet another free open source subtitle editor software for Windows. Through this software, you can create and edit subtite files of ASS, XML, SRT, TXT, SUB, MPL, SMI, and more formats. Along with editing, you can also synchronize subtitle text with video through this software. Let us checkout what are the features offered by this software.

Main Features:

• Subtitle Data: In this field, you can view all the subtitle text lines along with their start and end time duration. By double-clicking over a subtitle line, you can manually edit its text as well as its duration to add delay or furtherance to the subtitle text position.
• Media: After importing a video file to this software, you can view it with its subtitle in this section. In addition to that, a media timeline is also present in it that allows you to select any part of the media to view the subtitle of that position.
• Subtitles: It is a tab that offers multiple tools to edit subtitle style, subtitle font, subtitle color, and subtitle position over the video.

Additional Features:

• Rip Subtitles: Using it, you can rip or extract subtitles from an MKV video file.
• Download Subtitle: Through this feature, you can find and download the subtitle file for a movie or series from the internet.
• Check Subtitle Errors: Use it to quickly find out any spelling or timing errors in a subtitle file.

Final Thoughts:

It is a simple and effective open source subtitle editor software that allows you to edit various aspects of a subtitle file.

Gaupol

Gaupol is another free open source subtitle editor software for Windows. It is a simple text-based subtitle editor that enables you to edit, synchronize, and translate subtitle files. It supports subtitle files of multiple formats namely TXT, SSA, SRT, LRC, and VTT. In it, you can load video and subtitle files and start the subtitle editing process. Now, check out the main features of this subtitle editor.

Main features:

• Editor: In its editor, you can view subtitle text lines along with their start and end durations. By double-clicking over a subtitle text line, you can manually edit or replace it with ease. Similarly, you can also change the start and end duration of each subtitle text line to achieve synchronization or delay between video and subtitle text.
• Video Player: You can use it to play or preview the video with the edited subtitle text. Any change in the subtitle text will immediately reflect over the video player.
• Multi-Project Editing: In this software, you can open up multiple subtitle editing projects in side by side windows that enable you to work on multiple subtitle projects at a time.

Additional Features:

• In this software, you can also split an entire subtitle project and a subtitle text line into multiple parts.
• A handy convert frame rate feature is also present in this software through which you can match the subtitle frame rate with the frame rate of a video.

Final Thoughts:

It is a cleanly designed open source subtitle editor through which you can easily edit multiple subtitle projects at a time.

Subtitle Synchronizer

Subtitle Synchronizer is another one of free open source subtitle editor software for Windows, Linux, and macOS. As its name suggests, it is mainly a subtitle synchronizer software that also enables you to edit the subtitle entries. It is also one of the simplest subtitle editors in which you can manually select and edit the subtitle text and time entries. Now, check out its main features.

Main Features:

• Main Editor: From its main editor, you can select subtitle text from the Text field and adjust its text. Similarly, you can select the Edited Time field and change the time duration to synchronize it with the video.
• Merge Chapter: Using it, you can select and merge multiple subtitle lines into one.
• Save: After editing, you can use it to save the subtitle file in either SUB or SRT format.

Final Thoughts:

It is a straightforward open source subtitle editor through which you can quickly edit and synchronize the subtitle file data.