Free ad blocker software for linux

BFilter is a filtering web proxy. BFilter was originally intended for removing banner ads only, but at some point it has been extended to remove popups and webbugs. It cant be used as a general purpose filtering proxy because it was never intended this way.
For example you cant just block an arbitary object, you can only hint the ad detector in its decision making.
The main advantage BFilter has over the similar tools is its heuristic ad detection algorithm. The traditional blocklist-based approach is also implemented, but its mostly used for dealing with false positives.
Unlike other tools that require constant updates of their blocklists, BFilter manages to remove over 90% of ads even with an empty blocklist!
The javascript generated ads are not a problem for BFilter, as it has a javascript engine to combat them.
BFilter is expected work with any browser that supports proxies (nearly any browser does), and can forward requests to another HTTP proxy.
BFilter is written in C++ and is distributed under the GNU GPL.
Main features:
- HTTP/0.9 - HTTP/1.1 support.
- Persistent connections (HTTP/1.1 only).
- Pipelining (HTTP/1.1 only).
- HTTP compression.
- Forwarding to another proxy.
- All processing is done on the fly. It doesnt load the whole page or image before processing.
- Heuristic and regex-based approaches to detect ads.
- Detects and removes image, iframe, flash ads, popups and webbugs.
- A javascript engine to combat js-generated ads and popups.
- Heuristic analyzing of images and Flash files.
Enhancements:
- BFilter now caches external scripts it fetches for analyzing.
- Filtering accuracy was improved.
- Added a workaround for "Error decompressing response" problem with Opera and some websites.
- JavaScript engine was updated.

WebCleaner is a filtering HTTP proxy. It can be customized to your needs.
Main features:
- remove unwanted HTML (adverts, flash, etc.)
- popup blocker
- disable animated GIFs
- filter images by size, remove banner adverts
- compress documents on-the-fly (with gzip)
- reduce images to low-bandwidth JPEGs
- remove/add/modify arbitrary HTTP headers
- configurable over web interface
- usage of SquidGuard blacklists
- antivirus filter module
- detection and correction of known HTML security flaws
- Basic, Digest and (untested) NTLM proxy authentication support
- per-host access control
- HTTP/1.1 support (persistent connections, pipelining)
- HTTPS proxy CONNECT and optional SSL gateway support
Enhancements:
- Compatibility problems with Internet Explorer and the Compress
- filter have been fixed.
- The Blocker filter now allows absolute block URLs.
- The sets of blacklisted domains and advertisement servers have been updated.

ad-tolk enables Wi-Fi enabled machines that are within range of each other to automatically setup their wireless interfaces by calculating IP addresses based on their MAC addresses (in the range 10.0.0.0/8) and joining an ad-hoc cell called "livefolio".

Afterward, all nodes can discover their neighbors and start exchanging text messages without any manual network configuration.

Form Spam Bot Blocker is a PHP class that can generate forms that prevent submission by spam robots without requiring human users to enter special values.

The project generates hidden inputs for forms that have special values that are verified on the server after the form is submitted to eventually detect whether the form was sent by a spam robot.

The class can generate an hidden input that contains an encoded value of the user browser, user computer IP address and the current time.

The class verifies whether these browser name and IP address are still the same, and also whether the form is being submitted by a normal time interval after it was create, like when it is submitted by a real human user.

The class also generates a text input that are invisible for the user. A human user would not fill this input. If the input is submitted with a value, it was certainly a robot.

When the class detects a situation that demonstrates the form was submitted by a robot, the application should not accept the form submission.

Iter Vehemens ad Necem project is a graphical roguelike game.
Iter Vehemens ad Necem (IVAN) is a graphical roguelike game which currently runs in Windows, DOS, and Linux. It features advanced bodypart and material handling, multi-colored lighting and, above all, deep gameplay.
Fellow adventurer, turn back while you can! For here begins the roguelike Iter Vehemens ad Necem, a Violent Road to Death. If you choose to travel along it, you will dive into countless exciting adventures to gain items of great magic, attain powerful equipment made of mysterious materials, bathe in the blessings of mighty gods and recruit loyal allies of various shapes and sizes.
Unfortunately, along the way you will also often be dangerously injured, poisoned, catch numerous diseases, lose several limbs and transform into manifold different kinds of pitiful creatures in the darkest depths of hostile dungeons. And, at the end of the road, you are bound to perish in a most gruesome and painful way. Dont say we didnt warn you.
Enhancements:
- fluids can now cover items and characters and interact with them
- items made of iron alloys can now rust
- added directional light and day and night which use it
- added some cosmetical weather effects
- New Attnam has now many new NPCs, for instance a sumo wrestler who can be challenged
- polymorph control is now more interesting; you need to see a monster once before you can polymorph into it, and more powerful ones require more intelligence
- added wands of acid rain, mirroring and necromancy
- added scrolls of detect material, harden material and golem creation
- added several new monsters, eg. powerful named archangels for each god and necromancers who raise skeletons and zombies to do their bidding
- one can now give pets tactical commands, change their equipment and use them to carry extra stuff (these are accessed using Chat and Issue commands keys)
- the player can now panic if he gets hit too much, like the monsters have done in previous versions
- the player can now become exhausted if he fights for too long and/or uses the new run command too much
- spiders are now able to make webs
- you can now get stuck to slime
- badly hurt/trapped bodyparts now become unusable until they regain some HP/become untrapped
- it is now possible to browse detailed death reasons of individual monsters in the postgame massacre lists
- added many new informative graphical details, for instance recently altered attributes are shown with a different color for some time
- gloomy cave is now longer and has more special levels and rooms
- all the endgame battles are more complex
- added leprosy, a nasty disease which causes your limbs to drop off randomly