# Autofill Forms vs Sider

Autofill Forms records 0 monthly visits with — month-over-month growth and Freemium pricing. Sider records 2,644,740 monthly visits with -10.6% growth and Freemium pricing.

| Metric | [Autofill Forms](https://openaitools.app/tool/autofill-forms) | [Sider](https://openaitools.app/tool/sider) |
| :--- | :--- | :--- |
| Website URL | https://chromewebstore.google.com/detail/autofill-forms/mnbipbegfpcoeifkilkiphifgfmohlcl | https://sider.ai |
| Categories | AI Forms, AI Assistant, AI Productivity Tools | AI Assistant, AI Chatbot, AI Writing Assistants, AI Reader |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 0 | 2,644,740 |
| MoM Growth Rate | — | -10.6% |
| Primary Market | Global | United States |
| Direct Visits | 0 | 1,699,535 |
| Review Score | 3.8 | 4.5 |
| Saved Count | 0 | 31 |
| Supported Platforms | Browser Extension | Website |

## Autofill Forms

Autofill Forms takes a different angle from classic password-style autofillers. Instead of guessing at your personal profile, it inspects the active page, finds the input fields, and presents them in a single popup panel. From there you can fill or update fields directly, apply saved values back to the page in one click, and see the full set of inputs a form is actually collecting — including fields that are hidden from view.

The extension preserves original placeholder hints as it works, which makes it easier to figure out what an unfamiliar field expects before you type into it. That combination — visibility plus one-step population — is what makes it handy for quality assurance, demo data entry, and long multi-field workflows where retyping the same values across several sites would otherwise eat your time.

It is published on the Chrome Web Store by the developer behind phuongphung.com, currently listed at version 2.0.0 with 75 users. The listing reports that the extension handles personally identifiable information and that this data is not sold to third parties or used to determine creditworthiness. The extension is free to install from the store.

**Pricing & Plans:** Free to install from the Chrome Web Store. The listing shows no paid plan; any premium tier would be arranged by the publisher.

- **Form field inspection:** Detects the input fields on the active page and shows them in a clean popup, so you can see what a form collects before filling it.
- **One-step filling:** Fill or update detected fields straight from the popup, applying saved values back to the page without hopping between tabs.
- **Hidden field visibility:** Surfaces fields that are not visible on the page, which is useful for auditing what a form is really collecting behind the scenes.
- **Placeholder preservation:** Keeps the original placeholder hints intact, making it clearer what each field expects from you.
- **Repetitive flow support:** Handy when the same information has to be entered across multiple sites or through long, many-field sequences.

**Strengths:** Shows hidden and non-visible fields, giving real transparency into what a form collects; Preserves placeholder hints so unfamiliar fields are easier to understand; Fills a whole form from one popup instead of field by field; Free to install and published by a developer with a clean record on the store

**Limitations:** Current store listing shows only a small user base of around 75 users; Handles personally identifiable information, so it is worth reviewing the privacy policy before use; Not an AI-powered mapper — it works from detected fields and saved values rather than understanding free text

[Profile (Markdown)](https://openaitools.app/tool/autofill-forms.md)

## Sider

Sider's premise is that you should not have to leave the page you are reading to use an AI assistant. Its sidebar overlays the browser, detects the content in view, and responds with chat, summaries, translations or explanations using frontier models from multiple providers. The result is a lightweight research and reading workflow: highlight a paragraph, ask for a simpler explanation, translate a PDF and keep the original in sight.

Recent versions push Sider beyond chat. Sider Hand is a browser agent that works across real websites and uses your logged-in sessions to carry out multi-step jobs such as comparing prices while shopping, filling forms, doing cross-site research or triaging a Gmail inbox. Sider Code goes the other way, letting you instruct changes to a website's appearance or behaviour in plain language and preserving the customisation for next time. A Create module generates images, videos, slides and documents from the same panel.

Pricing moves from a limited free tier to credit-based paid plans aimed at heavier users. Lower plans suit occasional chat, summarisation and translation, while higher tiers add a dedicated cloud computer that keeps the browser agent running around the clock and a larger monthly credit allowance. Sider ships as browser extensions for Chrome and Edge plus desktop and mobile apps for macOS, Windows, iOS and Android, and is used by a very large installed base.

**Pricing & Plans:** Freemium. Free tier available with limited credits; paid plans advertised at roughly US$10/month for occasional use up to around US$100/month at the top tier, with higher credit allowances and a dedicated cloud computer on the upper plans.

- **AI sidebar on any page:** A persistent panel that reads the page you are on and answers follow-ups with GPT, Claude or Gemini without copying content into another tab.
- **Summarise and chat with documents:** Summarise long articles, PDFs and YouTube videos, extract key points, and ask detailed questions about the source material.
- **Translation and read-aloud:** Translate webpages, PDFs and images, compare bilingual output side by side, and have content read aloud for review on the move.
- **Sider Hand browser agent:** Delegate multi-step tasks across real websites — price comparison, form filling, research and inbox triage — using your existing logged-in sessions.
- **Sider Code page customisation:** Describe a change in plain words and have Sider restyle or simplify any website, remembering the modification for future visits.

**Strengths:** Works inside the browser you already use, with no context switching; Access to multiple frontier models from one subscription; Strong reading toolkit: PDF chat, YouTube summaries, translation and read-aloud; Increasingly capable agent features for multi-step browser tasks

**Limitations:** Useful credits run out quickly on the free and lower tiers; Model availability and quota rules change over time, so expectations must be checked per plan; Some agent and code features depend on a cloud machine and heavier plans

[Profile (Markdown)](https://openaitools.app/tool/sider.md)

## Frequently Asked Questions

### How do Autofill Forms and Sider compare in monthly traffic?

Autofill Forms has 0 monthly visits, while Sider has 2,644,740. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Autofill Forms has a month-over-month growth rate of —; Sider has -10.6%.

### How does pricing compare?

Autofill Forms: Freemium. Free to install from the Chrome Web Store. The listing shows no paid plan; any premium tier would be arranged by the publisher. Sider: Freemium. Freemium. Free tier available with limited credits; paid plans advertised at roughly US$10/month for occasional use up to around US$100/month at the top tier, with higher credit allowances and a dedicated cloud computer on the upper plans.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [ChatGPT](https://openaitools.app/tool/chatgpt-4) | 6,048,022,723 | +2.2% | Freemium | OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research. | [.md](https://openaitools.app/tool/chatgpt-4.md) |
| 2 | [Claude](https://openaitools.app/tool/claude-2) | 1,253,439,413 | +23.8% | Freemium | Anthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing. | [.md](https://openaitools.app/tool/claude-2.md) |
| 3 | [Monica](https://openaitools.app/tool/monica-ai) | 4,512,775 | -11.3% | Freemium | Offers a very similar browser sidebar experience with multiple AI models, but features slightly different pricing and workspace tools. | [.md](https://openaitools.app/tool/monica-ai.md) |
| 4 | [Fillout](https://openaitools.app/tool/fillout-com) | 3,923,917 | -9.7% | Freemium | Build powerful forms, surveys and quizzes with AI in minutes | [.md](https://openaitools.app/tool/fillout-com.md) |
| 5 | [Merlin AI](https://openaitools.app/tool/merlin-ai) | 1,382,634 | +13.1% | Freemium | Provides robust browser-based summarization and prompt assistance, but lacks some of Sider's deeply integrated multi-model chat UI features. | [.md](https://openaitools.app/tool/merlin-ai.md) |
| 6 | [HARPA AI](https://openaitools.app/tool/harpa-ai) | 537,461 | +99.3% | Freemium | Excels at advanced web automation and data extraction alongside chat, but has a steeper learning curve than Sider. | [.md](https://openaitools.app/tool/harpa-ai.md) |
| 7 | [Glarity](https://openaitools.app/tool/glarity-summarize-google-and-youtube) | 188,823 | -49.6% | Freemium | Summarize YouTube, Google, and any page with AI — free in your browser | [.md](https://openaitools.app/tool/glarity-summarize-google-and-youtube.md) |
| 8 | [Kome AI](https://openaitools.app/tool/kome-ai) | 174,910 | -6.5% | Freemium | Integrates bookmark management and content composition into a clean sidebar, but has a more limited feature set than Sider. | [.md](https://openaitools.app/tool/kome-ai.md) |
| 9 | [Grasshopper Signup](https://openaitools.app/tool/grasshopper-signup) | 163,057 | +86.1% | Free | Ad-free, AI-powered signup forms for events, volunteers, and groups | [.md](https://openaitools.app/tool/grasshopper-signup.md) |
| 10 | [Voilà — AI Assistant, Chat and Writer](https://openaitools.app/tool/voil-chatgpt-browser-assistant) | 152,170 | -4.8% | Freemium | Delivers streamlined inline writing and webpage summarization via a browser extension, but with fewer custom sidebar tools. | [.md](https://openaitools.app/tool/voil-chatgpt-browser-assistant.md) |

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Source: https://openaitools.app/compare/autofill-forms-vs-sider

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