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CSFloat Market Checker
CSFloat Market Checker is a Chrome extension from CSFloat that overlays float value, pattern/paint seed, and other technical details directly onto Steam Market listings and inventory pages for CS:GO and CS2 items. It saves the step of manually looking items up on a separate float-checking site — the data shows up inline as you browse. The extension has around 560 ratings on the Chrome Web Store averaging 3.9/5; some users report occasional price-loading failures, particularly when using a VPN.
CS2 Trader - Steam Trading Enhancer
CS2 Trader is a Chrome/Firefox extension that adds trade-lock countdowns, in-browser skin inspection without launching the game, and Doppler/Gamma Doppler phase and fade-percentage detection. It pulls float values and pricing from multiple sources directly into your Steam inventory and trade offers, so you know an item's real worth before accepting a trade. Open-source, used by 300,000+ CS2 traders.
Steam Inventory Helper
Steam Inventory Helper compares CS2 skin prices across 28+ third-party marketplaces and overlays float values, pattern index, and sticker/charm prices right on your item listings. It calculates total inventory value and potential profit, lets you bulk-list items on the Steam Community Market, and sends trade-offer notifications with one-click accept.
SteamDB
The official SteamDB extension adds SteamDB and PCGamingWiki links across Steam's store and community pages, shows a banner with a game's historical lowest price (with date and discount size), and displays live concurrent player counts. It also adds a quick-sell button in your inventory and reorganizes the achievements page by update and DLC.
Steam Market History Helper
This extension syncs your entire Steam Community Market buy/sell history into a local browser database — no external servers, no data leaves your machine. It injects a per-item buy/sell summary directly on market listing pages and offers a filterable history view (by name, date, type, currency) with a chart and CSV/JSON export.
CS2 Case Opening Stats
This extension analyzes your CS2 case-opening history from Steam's inventory history page and breaks it down into detailed stats: total cases opened and money spent, drop rates by rarity (from mil-spec to gold), StatTrak item counts, your most-dropped items, and how many cases since your last knife. All calculations run locally in the browser with no data sent to external servers. It requires your Steam client set to English and the inventory history page loaded to work.
FACEIT CS2 Predictor
This extension predicts FACEIT CS2 match outcomes using a machine-learning model trained on tens of millions of real matches. During map veto, it shows a separate win probability for each team on every map in the pool, factoring in team composition, each player's map-specific history, and recent form. No account or login is required, and it doesn't collect personal data.
CS2 Faceit Stats
This extension overlays FACEIT stats — level, ELO and related data — directly on a player's Steam profile page, so you can size up a teammate or opponent without searching for their FACEIT account separately. It works the same way as similar tools (Eloking, Steamify): the Steam profile just needs to be linked to a FACEIT account.
LoungeDestroyer
LoungeDestroyer enhances CSGOLounge and DOTA2Lounge — skin-betting sites for esports matches — by auto-bumping your trade offers in the queue, optionally auto-placing bets and accepting trade offers, pulling live Steam Market prices into item listings, and adding market links on hover. It started as a Tampermonkey/Greasemonkey userscript before becoming a standalone extension; it hasn't been actively maintained in a while, so features like auto-bump and inventory refresh can be unreliable.
CS:GO Skin Tester
This extension adds a "Test CS:GO skin in-game" right-click option on inspect links (Steam Market or third-party sites): clicking it connects you to a dedicated test server where the skin is equipped so you can examine and use it in actual gameplay rather than a static screenshot. The tool and its backend are open source, but both are documented specifically for classic CS:GO — the developer makes no claim of CS2 support, and inspect-link/server compatibility isn't guaranteed after CS2's engine change.
Steam Revenue Calculator
Steam Revenue Calculator is a Chrome extension that overlays an estimated sales-revenue figure right on a game's Steam store page. It applies the Boxleiter method — inferring owner counts and multiplying by price, then adjusting for Valve's cut and refunds — to produce a rough earnings estimate rather than verified sales data. It has nothing to do with CS2 skin trading, but it's a fun way to gauge how much a title actually made on Steam. A Firefox port is also available.
Steam MultiSeller
Steam MultiSeller is a small Chrome extension that unlocks Steam's hidden built-in bulk-listing feature. Instead of listing items on the Community Market one by one, you open the item's market page, click the extension icon, set how many copies to list, and they all go up for sale at once. It's aimed at anyone offloading large stacks of identical items who wants to skip the repetitive clicking.
Repeek
Repeek (formerly FACEIT Enhancer) is a Chrome extension with over a million installs that adds quality-of-life automation to FACEIT. It can auto-ready for matches, auto-accept party invites, display both teams' ELO right in the matchroom, and track ELO gains and losses for both the current match and match history. It's an independent, community-built extension not affiliated with FACEIT.
FACEIT Mappio
FACEIT Mappio is a Chrome extension (around 100,000 installs) that turns opponent data into map-veto intelligence right inside the FACEIT matchroom. It shows per-map stats for every lobby player — matches played, win rate, inferred roles (rifler, sniper, clutcher, and more), current streaks and past head-to-head encounters — plus AI-driven map win-probability and ban-prediction estimates. A paid Pro tier adds opponent positioning heatmaps. It's an independent extension, not affiliated with FACEIT.
Better Float
BetterFloat is an open-source Chrome extension that enhances 15+ CS2 skin marketplaces, including CSFloat and Skinport. It pulls Buff163 and YouPin reference prices directly into item listings, color-codes the price gap versus Buff, shows precise listing age and sticker price percentages, and caches Buff prices locally with hourly refreshes to cut down on network calls. The extension is modular so unwanted features can be switched off, and per the developer it doesn't access personal data or account credentials.
Better Buff
BetterBuff is a free, open-source successor to BuffUtility that improves the shopping experience on Buff163, the Chinese CS2 skin marketplace. It adds a dark mode, shows listing age and more precise sticker price percentages, surfaces dual pricing and listing counts directly in search results, adds souvenir package team info, and gives quick access to the Buff Points Lottery. It also supports !gen link generation and FloatDB integration, and is actively maintained on GitHub.
Neyrren Trade Helper
NTH (Neyrren Trade Helper) is a browser extension designed to simplify your routine when trading Steam skins. It adds various tools to trading platforms, making them easier and more convenient to use. The main focus is on quality-of-life features that significantly improve the user experience but, for one reason or another, were never implemented by the platforms themselves. The extension uses a modular architecture, allowing everyone to enable only the features they need. Features for all websites: 1. CsTradeBook Integration - adds buttons for quickly creating and editing deals in CsTradeBook. 2. Profit Calculator - calculates the required purchase or sale price for a selected profit margin when you highlight a price on a website. 3. Market Router - adds a menu that lets you quickly open different marketplaces and check prices for a selected skin. Features for CSFloat: 1. Auto Max Balance - adds quick buttons that automatically set the maximum listing price based on your balance, your balance plus 8%, or another custom percentage for bargains. 2. Auto Refresh - adds an automatic refresh mode for marketplace listings. 3. Bargain Enhancer - adds new tools to the bargain menu, making offers much faster and easier to send. 4. Category Menu - lets you hide the skin category menu so it does not take up unnecessary space when you do not need it. 5. Item Highlighter - lets you configure filters that highlight matching listings, making it easier to snipe specific skins. 6. Precise Float - makes it easier to select precise float ranges in the standard marketplace filters, such as 0.15-0.18 or 0.07-0.08. 7. Saved Filters - lets you save filter configurations and apply them again whenever needed. Features for Steam: 1. Saved Filters - lets you save Steam Market filter configurations and apply them again whenever needed.