Colorful inventories, changes each items' background based on its rarity.

Real chat status on profiles (away, busy, snooze instead of just online).

Bookmark an item and get a notification when it is ready to trade.

NSFW filter mode to avoid showing anime boobs to your colleagues.

Shows exterior on each item and adds links to other version to inventory and market pages.

Doppler phases, fade percentages, marble fade patterns (fire and ice, blue tip, red tip, etc.).

Order by float value on market pages, show more than the default 10 listings on the market.

Shows floats and other technical info like paint index, paint seed, pattern index in inventories, offers and on the market.

Shows when an item's trade lock will expire and adds a countdown.

'Inspect in Browser.' button on market, inventories and trade offers.

Show profit for incoming trade offers, order by most profitable first.

Total inventory value, trade offer value.

Pricing info in inventories and trade offers.

I started by adding functionality that Steam Inventory Helper lacked, but it already has SIH's most important features and much more.

CSGO Trader is an open source browser extension for Chrome and Firefox that is designed to help with CS:GO trading.

Steam sell multiple items at once