Software Alternatives, Accelerators & Startups

Violentmonkey VS Captioner.io

Compare Violentmonkey VS Captioner.io and see what are their differences

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Violentmonkey logo Violentmonkey

Violentmonkey is a userscript manager to support running userscripts in web pages.

Captioner.io logo Captioner.io

Captioner is an AI subtitle generator and editor for your videos. Add accurate subtitles to your videos and save hours of work. Upload your videos and edit right on your browser.
  • Violentmonkey Landing page
    Landing page //
    2023-10-16
  • Captioner.io Landing page
    Landing page //
    2026-07-02

Add Accurate Subtitles to your Videos

Add accurate subtitles to your videos and save hours of work. Upload your videos and edit right on your browser. Translate your subtitle into another language with a single click. Get subtitle file for your YouTube video or download the video with subtitles added.

Powered by Whisper but Optimized for Video Subtitles

  • Focused on Accuracy. We don't cut corners when we transcribe your videos, we use the highest quality AI model to make sure the transcription is as accurate as possible. This saves you time and money in your content creation process.
  • Precise Timestamps. Not every AI transcription tool gives you timestamps precise enough for videos. We add extra processing to align the timestamps so you don't have to spend too much time tweaking them. We also provide word-level timestamps for more fine-grained controls.
  • Smooth Subtitle Editing Experience. Captioner is built by content creators, for content creators. We spent hours perfecting the editing experience so you can spend more time on your content and less time on the tools.
  • Import and Align Existing Transcripts. You might already have a transcript written for your video. No problem! You can import it directly into Captioner and we will align it for you. (Think YouTube's auto-sync feature, but better!)
  • Subtitle File Export. Different platforms and editing softwares use different subtitle file formats. We support the most popular formats (SBV, SRT, VTT) so you can add quickly add subtitles into your YouTube videos. You can also choose a font style directly from the editor and get a video export with the subtitles burned in.

"I haven't found an AI transcription software that is not only accurate but also affordable until I came across Captioner. It's a game changer for our channel."

Violentmonkey

Pricing URL
-
$ Details
Platforms
-
Release Date
-

Captioner.io

$ Details
freemium $20.0 / Monthly
Platforms
Windows MacOS
Release Date
2024 April
Startup details
Country
Singapore
Founder(s)
Simon Liang
Employees
1 - 9

Violentmonkey features and specs

  • Free and Open Source
    Violentmonkey is freely available to use and the source code is open for anyone to inspect, modify, and contribute to. This ensures transparency and community-driven development.
  • Active Development
    The project is actively maintained and updated, which means that bugs are fixed promptly and new features are regularly added.
  • Cross-Browser Support
    Violentmonkey is compatible with multiple browsers including Chrome, Firefox, Microsoft Edge, and Opera, providing flexibility to users regardless of their browser preference.
  • User Script Manager
    It allows users to manage and run custom scripts to enhance web pages, providing extensive customization options for a tailored browsing experience.
  • Easy Backup and Sync
    Features like backup and sync allow users to easily transfer their settings and scripts across different devices, ensuring a consistent experience.

Possible disadvantages of Violentmonkey

  • Learning Curve
    For new users, especially those not familiar with scripting, there might be a learning curve involved in understanding how to write and manage scripts effectively.
  • Security Risks
    As with any tool that runs third-party scripts, there is a potential risk for malicious scripts that can compromise user security and privacy if not properly vetted.
  • Dependency on Community Scripts
    The quality and functionality of Violentmonkey heavily rely on the availability and maintenance of user-submitted scripts, which can vary in quality.
  • Browser Performance Impact
    Running multiple or poorly optimized scripts can affect browser performance by increasing loading times and resource consumption.

Captioner.io features and specs

  • Ease of Use
    Captioner.io provides a user-friendly interface that's easy to navigate, making it accessible for individuals with varying technical expertise.
  • Accuracy
    The platform utilizes advanced algorithms to deliver highly accurate captioning, reducing the need for extensive manual corrections.
  • Customization
    Users can customize captions to suit different styles and preferences, allowing for greater personalization and flexibility.
  • Speed
    Captioner.io processes audio and video files quickly, enabling fast turnaround times for projects requiring captions.
  • Integration
    The service integrates seamlessly with a variety of platforms and software, facilitating a smooth workflow for users.

Analysis of Violentmonkey

Overall verdict

  • Yes, Violentmonkey is a reliable and efficient userscript manager that caters to the needs of users who want to customize their web browsing experience.

Why this product is good

  • Violentmonkey is considered a good choice for users looking to manage userscripts on their web browsers. It provides a clean and straightforward interface, supports a wide range of script sources, and is compatible with multiple browsers including Chrome, Firefox, and Edge. Moreover, it is open-source, allowing for community contributions and transparency.

Recommended for

  • Tech-savvy users interested in enhancing their web browser functionality through userscripts.
  • Developers who want to test userscripts in a flexible environment.
  • Users looking for an open-source alternative to other popular script managers like Greasemonkey or Tampermonkey.

Analysis of Captioner.io

Overall verdict

  • Captioner.io is a solid, user-friendly captioning and subtitling tool that leverages AI to quickly generate accurate captions for video and audio content, making it a good choice for creators seeking efficiency and accessibility.

Why this product is good

  • Automated AI-powered transcription that saves significant time compared to manual captioning
  • Supports multiple languages and translation for reaching wider audiences
  • Easy-to-use editing interface for refining and customizing captions
  • Helps improve video accessibility and compliance with accessibility standards
  • Boosts SEO and engagement by making content searchable and viewable without sound
  • Export options compatible with popular platforms and video formats

Recommended for

  • Content creators and YouTubers who need fast, accurate captions
  • Marketing teams producing video content for social media
  • Educators and e-learning platforms requiring accessible materials
  • Businesses aiming to meet accessibility compliance requirements
  • Podcasters and video producers wanting to repurpose content with transcripts
  • Anyone seeking to reach international audiences through subtitle translation

Violentmonkey videos

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Captioner.io videos

No Captioner.io videos yet. You could help us improve this page by suggesting one.

Add video

Category Popularity

0-100% (relative to Violentmonkey and Captioner.io)
Browser Extensions
100 100%
0% 0
Video Tools
0 0%
100% 100
Dark Mode
100 100%
0% 0
Subtitle Maker
0 0%
100% 100

User comments

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Social recommendations and mentions

Based on our record, Violentmonkey seems to be more popular. It has been mentiond 46 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Violentmonkey mentions (46)

  • Show HN: UserScript to manually choose model for ChatGPT website
    - GPT 4o mini, so you can save your 4o calls for more complex queries https://github.com/altbdoor/userscripts/raw/master/force-gpt3.user.js. - Source: Hacker News / about 2 years ago
  • If your Firefox suddenly started to hang or become extremely slow today, check if you have tampermonkey 5.0. Disable it for now as it seems to be the culprit.
    Since Tampermonkey seems to be misbehaving, consider using Violentmonkey. Source: over 2 years ago
  • Current plan for the flag
    Step 1Install violentmonkey (or your favorite user script manager). Source: about 3 years ago
  • Andrej Karpathy โ€“ State of GPT ( At MSBuild 2023)
    Sounds like a good violent monkey [0] script for you do this weekend. :) [0] https://violentmonkey.github.io/. - Source: Hacker News / about 3 years ago
  • Auto expand for reports button in modqueue
    Toolbox is great, but if that is all you really need, here's this! You can copy and paste this as a new script to use in ViolentMonkey [AMO] or whatever script manager you use. Source: over 3 years ago
View more

Captioner.io mentions (0)

We have not tracked any mentions of Captioner.io yet. Tracking of Captioner.io recommendations started around Jun 2025.

What are some alternatives?

When comparing Violentmonkey and Captioner.io, you can also consider the following products

Greasemonkey - Customize the way a web page displays or behaves, by using small bits of JavaScript.

Descript - Text-based audio editor and automated transcription

Tampermonkey - Greasemonkey compatible script manager.

PixScript - Paste a YouTube, TikTok, or Instagram URL and get the full transcript with timestamps. Export as SRT subtitles, plain text, or PDF. AI summaries, rewriting, and 50+ language translation built in. Free to start.

Greasy Fork - A site for user scripts.

GeekLink.dev - GeekLink AI Subtitle Factory: batch auto-transcribe, OCR, AI translation, and subtitle burn-in. All locally on Mac. Free 7-day trial.