• Fast access to games:
  The
  full Steam library and all future Steam releases are at your
  fingertips. After you’ve purchased a game, download it immediately and
  start playing.
• Automatic game updates:Hunting for patches and downloading from unorganized web sites is so
  twentieth-century. On Steam, your games stay up-to-date by themselves.
  No hassles.
• Instant-messaging that works in-game:With Steam’s “Friends” service, you can talk to your friends while you
  play. You can also see when they’re playing games and easily join the
  same servers together.
• Easy browsing of multiplayer game servers:
  Steam’s integrated server browser makes it easy to navigate thousands of Internet game servers.
• Steam-only special offers:
  From pre-release discounts to free-play weekends, Steam delivers what gamers value most.
• Play your games on any PC:Once you have a Steam account, you can sign in from any PC and access
  your games. Your games are associated with your account, not your
  computer.

Ban System

When running SourceBans web interface and SourceMod
plugin together, you will be able to instantly ban people from all of
the servers you have added into the system. Once you either ban a
player from the server, or though the web interface, the specified
player will instantly be banned accross all of your communities`
servers. You will no longer need to add the STEAM Id’s of users to all
of your servers` config files, and keep the configs synced and updated
after each ban.

With SourceBans, its as simple as `sm_ban` in the server console, and
that player will be instantly banned from all of your servers.

Admin Management System

As-well as having a
kick a** ban system for all of your servers, SourceBans allows you to
manage all of your SourceMod admins though a simple and easy to
understand web panel. For example, you can create a new admin group
which will only be able to kick and ban. After this, you can add a new
admin, type the required information and add that admin to that new
group, and that admin will automatically inherit all of the privalages
from that group. And starting next map, the admin will have the
specified level of admin in the server, or group of servers that you
have set.

Admins can be set on individual servers, or if you want, you can create
a group of servers. And when adding an admin, you will have the option
to give that admin the privaleges on that group of servers. So adding
admins is easy and fast.

Main Features

• Admin system for Sourcemod through the web
• Admin rights system, set permissions per admin per server
• Global banning system for your own servers, Web-Based banning
• Ban by STEAMID
• Kickban players directly on your servers directly from the web
• Search ban database
• Supports ALL Source modifications
• Supports an unlimited amount of servers
• Integration with Steambans for checking Steam ID’s

• Administration – Comprehensive API for developing administration systems.
• Clients – Working with in-game client information and callbacks.
• Commands – Creation, hooking, and overridding of client and server console commands.
• ConVars – Creation, hooking, and retrieval of console variables.
• Engine – Access to many Half-Life 2 engine features, with more constantly being added.
• Entities – Changing and retrieving entity properties, both named and numbered.
• Events – Creating, firing, and hooking of Half-Life 2 GameEvents.
• Files – Access to the filesystem.
• IPC – Advanced inter-plugin communication, similar to AMX Mod X.
• Messages – Sending and hooking UserMessages.
• Parsing – Advanced, highly optimized text parsing.
• Timers – Creation of timed events.
• Translation – Multi-Lingual phrase file lookup.

What makes SourceMod different? (Developers)

• Speed – SourceMod is lightning fast,
  and this is not an idle boast. Every plugin is loaded into memory and
  converted to raw CPU code, hand optimized to assembly. Unlike other
  scripting solutions for Source, this means plugins are actually native, rather than processed manually. The speed difference is incomparable.
• Optimization
  – Okay, this is the same as speed. But we had to list it twice.
  Optimization is one of the key parts of SourceMod development. Every
  sub-system is designed to be as fast as possible. This is easily
  visible after reading our Developer Blog.
• API
  – The majority of work in SourceMod occurs in developing perfect API.
  When adding any interface or function, we ask the following questions:
  
  • Does it represent an optimized solution?
  • Would anyone use it?
  • How confusing is it?
  • Does its structure match the most probable common usage?
  • Will it be possible to extend it in the future?
  • Does its name represent what it does?
  • Does its name conform to other similar functions?
• Extensibility
  – SourceMod is completely extensible. Rather than piggyback on
  something inefficient and utterly improper design-wise, like console
  commands, SourceMod provides a complete C++ API for extending both
  SourceMod and the Plugin event/native API. You can also write C++
  plugins.