Top 11 C# Valve Projects

ArchiSteamFarm

96 10,610 9.9 C#

C# application with primary purpose of farming Steam cards from multiple accounts simultaneously.

Project mention: Is still safe to use steam idle? | /r/Steam | 2023-12-07

Why should they? But be sure to use Open Source Projects like https://github.com/JustArchiNET/ArchiSteamFarm or https://github.com/JonasNilson/idle_master_extended so that no funny business happens due to your account due to shady idler programs. Idler programs simply mimic what you're doing and Steam doesn't care about you actually played the game or idled the time since Playtime is IR-reversible and the more you idle, the more you can't refund the game which suits them well.

SteamKit

6 2,447 8.8 C#

SteamKit2 is a .NET library designed to interoperate with Valve's Steam network. It aims to provide a simple, yet extensible, interface to perform various actions on the network.

Project mention: L i a r s | /r/DotA2 | 2023-06-03

So I will be making a client-side mod to show mmr changes as in the old client Upcoming data will be stored locally in the cfg folder (per account i.e. cloud synced) Wont know about matches played before adding the mod (valve went scorched earth removing data points from client.dll) But can populate previous history via an external opensource tool based on SteamKit samples

WorkOS

workos.com sponsored

The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
UWPHook

60 1,419 0.0 C#

🔗 Add your Windows Store or UWP games to Steam

Project mention: Enough positivity. What's the worst thing about the Steam Deck? | /r/SteamDeck | 2023-04-20

Edit: here's UWPHook to link gamepass games to steam https://github.com/BrianLima/UWPHook

ValveResourceFormat

33 1,389 9.9 C#

🔬 Valve's Source 2 resource file format parser, decompiler, and exporter.

Project mention: CS2 Anubis - Leaked | /r/GlobalOffensive | 2023-06-07

Get https://vrf.steamdb.info/

Depressurizer

29 1,384 1.9 C#

A Steam library categorizing tool.

Project mention: I wrote an app for myself to filter my library by HLTB | /r/SteamDeck | 2023-12-11

Another thing you can do is use a Steam tag management system like Depressurizer to automatically tag games with their approximate HLTB time (eg. 1-5 hours could be a category, 6-10 hours could be another category), then on Steam Deck you can use the Tab Master plugin for Decky to show each HLTB categories as a separate tab. There are probably other ways to display the categories as well.

SFP

7 514 9.0 C#

This utility is designed to allow you to apply skins to the modern Steam client
ValveKeyValue

1 129 7.8 C#

📃 Next-generation Valve's key value framework for .NET

Project mention: C# VDF library? | /r/SourceEngine | 2023-06-07

There is this https://github.com/SteamDatabase/ValveKeyValue but i am unsure about duplicate key support.

InfluxDB

www.influxdata.com sponsored

Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
TurnSignal

1 85 0.0 C#

An anti-cable-twisting management utility for SteamVR.
sledge-formats

1 70 7.4 C#

C# parsers and formats for Half-Life 1 and related engines.

Project mention: A cross platform level editor for Quake-engine based games | news.ycombinator.com | 2024-02-28

Celeste64 uses https://github.com/LogicAndTrick/sledge-formats which include loaders for Quake formatted maps. It could be using the Quake format for a different engine.

ChatLogger

1 51 10.0 C#

ChatLogger is a Steam Tool based on the SteamKit2 library, designed to save your and friends messages! [Metro Theme]
Semi-Fixed-Time-Step-Interpolation

1 6 3.6 C#

Semi fixed time step interpolation implementation on unity based on source engine

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020). The latest post mention was on 2024-02-28.

C# Valve related posts

CS2 Anubis - Leaked
1 project | /r/GlobalOffensive | 7 Jun 2023
Blender and Dota 2
2 projects | /r/DotA2 | 16 May 2023
Why is there an Elvis PNG in the Steam Files? (..\steamui\images)
1 project | /r/Steam | 14 May 2023
extracting 3D Models from Dota 2
1 project | /r/DotA2 | 7 May 2023
extract assets and code from other games using Source engine?
1 project | /r/hammer | 28 Apr 2023
Does anyone know where/how to get the WAV files for the loose cannon? Or better yet send them to me?
1 project | /r/tf2 | 18 Apr 2023
[CS2] There won't be any server browser redesign (At this moment)
1 project | /r/GlobalOffensive | 30 Mar 2023
A note from our sponsor - WorkOS
workos.com | 20 Apr 2024

The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning. Learn more →

Index

What are some of the best open-source Valve projects in C#? This list will help you:

	Project	Stars
1	ArchiSteamFarm	10,610
2	SteamKit	2,447
3	UWPHook	1,419
4	ValveResourceFormat	1,389
5	Depressurizer	1,384
6	SFP	514
7	ValveKeyValue	129
8	TurnSignal	85
9	sledge-formats	70
10	ChatLogger	51
11	Semi-Fixed-Time-Step-Interpolation	6