# Browserless vs Sider

Browserless records 185,543 monthly visits with -21.2% month-over-month growth and Freemium, Paid, Contact for Pricing pricing. Sider records 2,644,740 monthly visits with -10.6% growth and Freemium pricing.

| Metric | [Browserless](https://openaitools.app/tool/browserless) | [Sider](https://openaitools.app/tool/sider) |
| :--- | :--- | :--- |
| Website URL | https://www.browserless.io | https://sider.ai |
| Categories | Bypass AI, AI Web Scraping, AI API, AI Developer Tools | AI Assistant, AI Chatbot, AI Writing Assistants, AI Reader |
| Pricing Model | Freemium, Paid, Contact for Pricing | Freemium |
| Monthly Visits | 185,543 | 2,644,740 |
| MoM Growth Rate | -21.2% | -10.6% |
| Primary Market | United States | United States |
| Direct Visits | 55,897 | 1,699,535 |
| Review Score | 4.4 | 4.5 |
| Saved Count | 0 | 31 |
| Supported Platforms | Website | Website |

## Browserless

Browserless gives developers a browser that already works in production instead of one that crashes, leaks memory, or gets blocked. Rather than running your own fleet of Chrome processes, you connect with a few lines of code over the WebSocket endpoint using Puppeteer or Playwright, or call task-specific REST endpoints for scraping, screenshots, PDFs, and downloads. The platform handles Chrome version upgrades, auto-scaling through traffic spikes, retries, and session queues so your automation code stays unchanged.

Its modern focus is AI agents. A built-in MCP server exposes search, scrape, and crawl tools that Claude, Cursor, or any MCP client can call directly, while Authenticated Profiles let an agent log in once and stay signed in across runs instead of hitting login walls or hard-coding credentials. Stealth fingerprints, CAPTCHA solving, and residential/datacenter proxies are included so agents that work in a demo also work against anti-bot-heavy production sites.

You can run Browserless as a fully managed cloud, a managed private cloud, or on your own hardware, using the same API in every case. The free tier covers 1,000 units per month with two concurrent browsers and no credit card; paid plans and enterprise agreements add concurrency, dedicated workers, SLAs, and compliance coverage such as SOC 2 Type II and HIPAA BAAs.

**Pricing & Plans:** Freemium: a free plan includes about 1,000 units per month with 2 concurrent browsers and no credit card. Paid plans scale units and concurrency, and self-hosted/enterprise options are quoted on request.

- **Puppeteer & Playwright endpoints:** Swap launch() for connect() and point your existing Puppeteer or Playwright scripts at a managed cloud browser — no rewrite required.
- **MCP server & browser agent:** Give MCP clients like Claude or Cursor ready-made search, scrape, and crawl tools, or run Browserless's own stateful agent for multi-step tasks.
- **Stealth, CAPTCHA & proxies:** Automatic anti-bot bypass, built-in CAPTCHA solving, and residential or datacenter proxy rotation to get through blocked targets.
- **Authenticated Profiles:** Log in one time and reuse the session across every run, so agents start signed in without credentials baked into your code.
- **Screenshot, PDF & debug APIs:** Generate pixel-perfect screenshots and PDFs from any URL, with a live debugger, request metrics, and worker health in the dashboard.

**Strengths:** One-line migration from self-hosted Puppeteer/Playwright to managed browsers; Built-in stealth, CAPTCHA solving, and proxies remove the hardest scraping work; Same API across cloud, managed cloud, and self-hosted deployments; Strong fit for AI agents via MCP server and persistent authenticated sessions

**Limitations:** Concurrency and unit quotas mean heavy scrapers can hit plan limits quickly; Pricing scales with usage, so high-volume workloads need cost planning; Advanced enterprise controls like dedicated GPUs and region pinning require sales contact

[Profile (Markdown)](https://openaitools.app/tool/browserless.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 Browserless and Sider compare in monthly traffic?

Browserless has 185,543 monthly visits, while Sider has 2,644,740. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Browserless has a month-over-month growth rate of -21.2%; Sider has -10.6%.

### How does pricing compare?

Browserless: Freemium, Paid, Contact for Pricing. Freemium: a free plan includes about 1,000 units per month with 2 concurrent browsers and no credit card. Paid plans scale units and concurrency, and self-hosted/enterprise options are quoted on request. 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 | [Apify](https://openaitools.app/tool/apify) | 4,147,762 | +3.9% | Freemium, Contact for Pricing | Hosts ready-to-run scrapers and automation actors, offering higher-level data extraction compared to raw headless browsers. | [.md](https://openaitools.app/tool/apify.md) |
| 5 | [Firecrawl](https://openaitools.app/tool/firecrawl-dev) | 1,828,239 | -1.9% | Freemium, Contact for Pricing | Open-source developer API that crawls websites and converts them directly into clean LLM-ready markdown. | [.md](https://openaitools.app/tool/firecrawl-dev.md) |
| 6 | [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) |
| 7 | [TinyFish](https://openaitools.app/tool/tinyfish) | 1,124,952 | +199.7% | Freemium, Contact for Pricing | Combines cloud browsers with live web search and agentic automation features for AI workflows. | [.md](https://openaitools.app/tool/tinyfish.md) |
| 8 | [Exa](https://openaitools.app/tool/exa-ai) | 1,062,574 | +16.8% | Freemium, Contact for Pricing | Provides web search and crawling built for LLMs, but lacks low-level programmatic DOM interaction. | [.md](https://openaitools.app/tool/exa-ai.md) |
| 9 | [Browser Cloud by TestMu AI](https://openaitools.app/tool/browser-cloud-by-testmu-ai) | 901,340 | +13.2% | Freemium, Paid, Contact for Pricing, Free | Provides real Chrome cloud sessions and automation APIs, but focuses heavily on testing workflows. | [.md](https://openaitools.app/tool/browser-cloud-by-testmu-ai.md) |
| 10 | [Bright Data](https://openaitools.app/tool/bright-data) | 802,752 | -5.9% | Free Trial, Paid | Delivers robust proxy networks and web scraping APIs, but is typically more expensive for simple headless browsing. | [.md](https://openaitools.app/tool/bright-data.md) |

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Source: https://openaitools.app/compare/browserless-vs-sider

More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)