Here is a list of Open Source (only GPL, BSD, MIT or MPL licenses accepted) Linux drivers that are already written, but are not included in the main Linux kernel.org tree for one reason or another. These are all possible projects that the Linux Driver Project developers could undertake to move the driver into the main kernel tree.

Note: please do not list closed source drivers here, or ones that contain some kind of licensing issue that prevents them from being merged into the Linux source tree due to a legal issue. If no open source driver exists for the same hardware, please add an entry on DriversNeeded if one does not already exist.

Drivers by subsystem and type

Firewire

• ToDo? : http://ieee1394.wiki.kernel.org/index.php/Out-of-tree_Kernel_Drivers | http://ieee1394.wiki.kernel.org/index.php/To_Do#New_drivers | http://ieee1394.wiki.kernel.org/index.php/Juju_Migration

Networking

Fixed Ethernet

• Chelsio TOE and RDMA support for the Terminator family http://service.chelsio.com/ NOTE: Networking maintainers do not want support for this class of hardware in kernel!!

Wireless 802.11

• Texas Instruments' ACX100/ACX111/TNETW1450 http://acx100.sf.net/ . See kernel inclusion section for some background information on the previous attempt to include it in the mainline kernel, also read http://linuxwireless.org/en/users/Drivers/acx1xx
• 3Com 3CRWE62092A X-Jack PCMCIA : http://poldhu.sf.net

Controller Area Network (CAN, ISO 11898)

• pcan http://www.peak-system.com/linux/index.htm Peak-System Technik CAN interfaces (ISA, PC/104, parport, PCI, PCMCIA, USB, PC/104plus, embedded variants)
• lincan http://www.ocera.org/download/components/WP7/lincan-0.3.3.html

Misc

• iBurst mobile broadband wireless http://sf.net/projects/ibdriver http://en.wikipedia.org/wiki/Iburst
• Zaptel (DAHDI) drivers for the Digum telephony interfaces http://downloads.asterisk.org/pub/telephony/dahdi-linux/
• NDISWrapper http://ndiswrapper.sf.net/ - implements Windows kernel API and NDIS API within Linux kernel, mostly acting as a compatibility layer to be able to load proprietary windows drivers when there is no Linux driver available. Not sure if any kernel developer wants this in mainline at all, so it`s just being listed for completeness here.
• kclown_spy http://clownix.net/ This kernel module permits the display of real-time plots for bandwidth of tcp/udp connexions and for qdiscs monitoring.
• l7-filter http://l7-filter.sf.net/ Linux layer 7 packet classifier
• Pulsar ADSL card http://sf.net/projects/openadsl/
• IMQ http://www.linuximq.net/. IFB was added to mainline to provide similar functionality as IMQ but didn't go all the way thus IMQ is still being used.
• bewan-adsl - Bewan ADSL PCI & USB st driver http://www.bewan.com/
• ipp2p - netfilter module for dealing with P2P? applications http://www.ipp2p.org
• arpstar - ARPStar kernel module for protection against arp poisoning http://arpstar.sf.net
• htbinit - Sets up Hierachical Token Bucket based traffic control (QoS? ) with iproute2 http://sf.net/projects/htbinit
• ksb - kernel SOCKS bouncer http://ksb.sf.net/
• noarp - kernel module for hiding network interfaces http://www.masarlabs.com/noarp/
• portbunny - kernel based highspeed TCP SYN port scanner http://recurity-labs.com/portbunny/
• linmodem - winmodems with Lucent Apollo (ISA) and Mars (PCI) chipsets http://linmodems.technion.ac.il/
• madwimax - user-space driver for the Samsung SWC-U200 Mobile WiMAX? USB dongle http://code.google.com/p/madwimax/
• tcpcp - TCP connection passing between apps on different hosts http://tcpcp.sourceforge.net/
• wanpipe - WANPIPE S-series multi-protocol WAN and ADSL adapters http://wiki.sangoma.com/wanpipe-linux-drivers

Storage

• Oracle ASMLib Kernel Driver http://oss.oracle.com/projects/oracleasm/

ATA

• Promise Technology RAID controllers: http://www.promise.com/support/support_eng.asp

Card Readers

• O2Micro? OZ711MS1? /OZ711MP1 controller, a card reader for MMC/SD/MS Pro - more info, driver for pre-2.6.17-series kernel
• sdricoh_cs mmc/sd-cardreader http://sdricohcs.sf.net/
• Neuros SD/MMC card readers (davinci.c, dm320_mmc.c, itomap2430_hsmmc.c, omap24xx_mmc.c, omap2430_hsmmc.c, etc). http://www.google.com/search?hl=en&lr=&q=+site%3Asvn.neurostechnology.com+mmc&btnG=Search
• Smart Cards readers drivers http://www.musclecard.com/sourcedrivers.html

SCSI

• Accusys SCSI raid driver http://uwsg.iu.edu/hypermail/linux/kernel/0710.2/2783.html
• ATARI SCSI (ACSI)1, 2 need to be ported from 2.4 kernel
• AEC-671X SCSI adapter driver (atp870u), was working in 2.4 kernel, broken in 2.6.
• ppSCSI, drivers for various parallel-port-to-SCSI chips, so your parallel-port-connected device shows up as a SCSI device. 2.6 version here: http://penguin-breeder.org/kernel/download/
• vscsihba - Virtual SCSI HBA Project http://vscsihba.aboo.org/
• cdemu-vhba - emulates SCSI HBA for cdemu http://cdemu.sourceforge.net/

iSCSI

• iscsitarget "iSCSI Enterprise Target". Note that the [[FAQ says that "Kernel patches are not necessary.", but this does not mean that kernel modules do not exist. The FAQ answer seems to exist to contrast iscsitarget against the older project it forked from, which required a patch to the kernel itself in addition to modules it supplied.
• iSCSI-SCST http://scst.sf.net - a forked version of IET (iSCSI Enterprise Target) - bugfixes, performance improvements and new features (pass-through support for tape drives etc.).
• Note: both of these probably are hard to sell, since stgt was merged upstream in kernel 2.6.20.

Tape

• lin_tape driver for IBM scsi/fc tape drives and libraries, open-source rewrite of the older proprietary IBMtape driver
• FTape driver, 1, 2
• HP Colorado Trakker tape driver

Disk encryption

• loop-AES (uncooperative with kernel developers)

USB

• Driver for spcp8x5 USB to serial adaptor. Used in ACT Solutions HomePro? /Zwave controller ZCU201.
• Eagle Chipset powered ASDL modem http://www.eagle-usb.org/

Video Input

Web Cams

• Divio NW802 and related (various cameras, various chipsets). SF project very infrequently updated
• Ricoh R5U870? -based Custom OEM Webcams : http://lsb.blogdns.com/ry5u870 http://marc.info/?l=linux-usb-devel&m=117803950126004
• Webcams with the ALI M5603C? chipset. There is a driver, but it doesn't work quite well, and I think it would need some love: http://sf.net/projects/m560x-driver/. These chipsets are used in some built-in webcams.The M5602 is supported as part of the now in mainline gspca driver.
• Syntek DC-1125 driver aka stk11xx. Not merged yet due to problems with bayer conversion and scaling not separated to v4l.
• ov511-new - adds additional decompression to the existing ov511 driver (ubuntu kernel) -- same as ov51x-jpeg? If so may not be suitable for in-kernel, see: http://www.rastageeks.org/ov51x-jpeg/index.php/Main_Page HansDeGoede is working on getting this into the mainline, decompression will go to userspace (libv4l)
• Microdia webcams (0c45:xxxx) - driver at http://groups.google.com/group/microdia/

V4L

• V4L driver for Matrox Marvel G200-TV and G400-TV
• RivaTV: Enables video-in TV tuners that come with nVidia graphics cards.
• http://www.jusst.de/hg/mantis Video capture from Mantis based DVB cards (Found link here: http://linuxtv.org/wiki/index.php/TerraTec_Cinergy_C_DVB-C)
• http://www.linuxtv.org/v4lwiki/index.php/Trident_TM6000 The TV-Master TM6000 is an integrated Video decoder and USB bridge IC from Trident. There is an experimental patch, but is has not been included in tree, and doesn't compile with the latest kernels.
• ivtv - ivtv driver for Hauppauge PVR PCI cards http://www.ivtvdriver.org
• Hauppauge HD PVR http://hg.jannau.net/ (included in Fedora kernel)
• Pinnacle Hybrid Pro Stick (320e) (USB UD=eb1a:2881) working with the em28xx-new driver
• tw68 - V4L2 driver for Techwell TW6800 based boards

Video Output

• device3dfx kernel driver for Voodoo boards svn://sf.net/projects/glide
• mga_vid driver for Matrox cards
• radeonfb ATOM BIOS parser and support for newer cards http://lwn.net/Articles/215965/ http://thread.gmane.org/gmane.linux.kernel/530781
• DXR3 & Hollywood plus Mpeg2 Decoder card http://dxr3.sf.net/
• radeonlcd http://fdd.com/software/radeon/

Audio

• hardsid driver http://hardsid.sf.net/
• snd_bt-sco - bluetooth SCO sound driver (ubuntu kernel)

Input Devices

• Acer hotkey driver http://www.cakey.de/acerhk/ (Does not work on x86-64 because it calls 32 bit protected mode BIOS routines; it can't be ported to libx86 because this can currently only make 16 bit real mode BIOS calls) (Ubuntu and Mandriva kernels)
• ATI Remote Wonder Plus http://mythtv.wbond.net/remote_wonder_plus_linux/
• Creative DXR2 http://dxr2.sf.net (only works on linux-2.4)
• Panasonic hotkey driver http://www.da-cha.jp/letsnote
• Wacom tablets Project homepage
• lirc http://www.lirc.org (included in Fedora kernel) and the lirc drivers for Hauppauge cards at http://ivtvdriver.org
• Synaptics USB driver for cPad and other USB touchpads
• lmpcm_usb - Logitech mediaplay cordless mouse driver (ubuntu kernel)
• xpc rc01 remote control - http://mathema.tician.de/node/416
• Aiptek/Trust USB tablets - http://sourceforge.net/projects/aiptektablet

Multiport Serial Devices

• Digi RealPort? ethernet-connected multiport console/serial server (dgrp)
• Digi AccelePort? C/X, XEM, Xr and EPC/X driver (dgap)
• Digi AccelePort? RAS and XP driver (dgdm)
• Digi Neo and ClassicBoard? driver (dgnc)
• Equinox/Avocent ESP Serial Hub http://www.connectivity.avocent.com/support/download-drivers/ -
• Equinox/Avocent SST multiport serial http://www.connectivity.avocent.com/support/download-drivers/ - linux-kernel review -

Data acquisition / custom device control

• dmx4linux http://llg.cubic.org/dmx4linux/ (like midi, but for lighting)
• GPIB/IEEE488 USB Controller, model NI GPIB-USB-HS by National Instruments. http://linux-gpib.sf.net/
• linuxclc http://sf.net/projects/linuxclc/ - "This is a Linux 2.4 driver for ISA, PC-104 and serial Indramat CLC cards for SERCOS motion control."
• camac http://www.ifh.de/~ole/camac/ Wiener CC-16 ISA-CAMAC, Jorway J73A? SCSI-CAMAC controllers, and a few others
• ccp http://psux1.kek.jp/~kohama/ccp/ccp.html CAMAC, TKO and Fastbus driver for Hoshin CCP-IBM(ISA) controller
• camdrv http://www.awa.tohoku.ac.jp/%7Esanshiro/kinoko/camdrv/index.html CAMAC driver for CC/7700-PCI,CC/7700-ISA,CC/7000-ISA,CCP (PCI/ISA),CCP (PCI-2703A)
• k2927/k2915/acc_unidaq http://www.elc.nias.ac.jp/~daq/software/ drivers for various KineticSystems? CAMAC cards

Hardware monitoring (a.k.a lm_sensors)

• TODO table: http://www.lm-sensors.org/wiki/Devices

VME

• SIS1100/SIS3100 PCI to VME interface (VME is a bus architecture popular in high-end physics labs and mission-critical systems) - the existing Linux source can be found at http://www.struck.de/linux1100.htm
• vmedrv is a device driver for Linux 2.x for the PCI-VME bus adapter Model 616/617/618/620 manufactured by SBS Technologies (Bit3).

Test/development cards

• ex10 ex10_i2c ex10_spi Modules for Amfeltec eX10 PCI Extender, GPL, included on accompanying CD only.

ACPI Support

• Experimental Toshiba ACPI Driver (needed for Toshset to control fan speeds, LCD brightness, etc.) http://memebeam.org/toys/ExperimentalToshibaAcpiDriver
• acer_acpi - Acer hardware control http://code.google.com/p/aceracpi
• fritzacpi - SuSE? 's 2.6 AVM kernel modules for fcclassic, fcpci, fcpcmcia, fcpnp, fcusb, fcusb2, fxusb_CZ, fxusb, e2220pc and e5520pc http://www.avm.de/ ftp://ftp.suse.com/pub/suse/i386/10.1/SUSE-Linux10.1-Beta3-Extra/suse/x86_64/km_fritzacpi.*

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Non-Driver modules outside of the kernel tree

Filesystems

• Read-only compressed loop blockdevice cloop
• Reiser4 http://kernelnewbies.org/WhyReiser4IsNotIn
• NILFS http://www.nilfs.org/
• unionfs http://www.filesystems.org/project-unionfs.html in andrew morton`s -mm tree.
• NAND flash filesystem YAFFS
• novfs - Novell Filesystem (inside OpenSuSE? kernel??)
• aufs http://aufs.sf.net/
• fusion proc filesystem - http://directfb.org/wiki/index.php/Fusion_Proc_Filesystem
• openafs - OpenAFS? distributed filesystem http://www.openafs.org/
• shfs - Secure Shell File System http://shfs.sf.net/
• Redundant Array of Independent Filesystems - source see also the papers

(This may not be the right category for the following)

• uloop - kernel driver for implementing loopdevice in userspace. http://aufs.cvs.sf.net/aufs/aufs/sample/uloop/00readme.txt?view=log
• dm-userspace - similar to uloop, but different, device-mapper-style implementation. http://wiki.xensource.com/xenwiki/DmUserspace
• cowloop - copy-on-write loop driver to be used on top of any other block driver. http://www.atcomputing.nl/Tools/cowloop/
• dm-bbr - Bad Block relocation target (gentoo kernel)
• cdemu - mount bin/cue cd images http://cdemu.sourceforge.net/

Network Block Devices

• DRBD
• Enhanced Network Block Device (enbd)
• GNBD
• vblade-kernel for exporting blockdevices via AoE? (ATA Over Ethernet)
• kvblade ditto, but different implementation

LSM (Linux Security Modules)

• AppArmor http://en.opensuse.org/Apparmor
• Dazuko http://www.dazuko.org/
• LIDS http://www.lids.org/
• MultiADM http://jengelh.medozas.de/projects/multiadm/
• SMACK Simplified Mandatory Access Control Kernel http://kerneltrap.org/Linux/Simplified_Mandatory_Access_Control_Kernel
• TOMOYO Linux http://tomoyo.sourceforge.jp/
• TALPA http://sf.net/projects/talpa/ Intercepts file accesses and allows userspace daemons to vet them. Part of Sophos security products. Please mind discussion thread at http://marc.info/?l=linux-kernel&m=119625408226843&w=2

(This may not be the right category for the following)

• grsecurity, gadmin and PAX http://grsecurity.org/
• McAfee? LinuxShield?
• Sophos AntiVirus?
• Exec Shield http://en.wikipedia.org/wiki/Exec_Shield , (included in Fedora kernel)

Virtualization

• kqemu http://www.nongnu.org/qemu/download.html
• VirtualBox virtualization drivers
• various VMware drivers as part of the open-vm-tools package http://open-vm-tools.sf.net/
• Mac On Linux - http://mac-on-linux.sf.net/
• virtualbox

Architectures

• Linux/98 for PC-98 NEC arch http://linux98.sourceforge.jp/ - deleted by 1, 2
• NEC Osprey board (vr4181) 1
• Linux Tiny patchset to minimize memory footprint and enable booting on embedded and old i386 devices (maintained by Sony)
• VAX port http://linux-vax.sf.net/ git tree
• DENX tree for various embedded architectures: http://www.denx.de/en/Software/GIT
• Tom Tom kernel ARM port and drivers http://www.tomtom.com/gpl

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Uncategorised

• Catweasel Advanced Floppy Controller driver http://www.soundtracker.org/raw/cwfloppy/
• Catweasel i/o device drivers... driver for the joystick/mice/keyboard parts (sid part is covered by compatible hardsid, see Audio section), see above for the floppy controller part http://llg.cubic.org/cw/
• parallel port hardware http://www-stud.ims.uni-stuttgart.de/~voegelas/pcf.html
• speakup http://www.linux-speakup.org/
• Texas Instruments UltraMedia? Firmware Loader http://penguin-breeder.org/kernel
• PJB100 mp3 player http://openpjb.sf.net/ with patches for recent kernels appearing at http://tech.groups.yahoo.com/group/PJB100-mp3/
• ATOP process counters http://www.atcomputing.nl/Tools/atop/kernpatch.html
• LTTng http://ltt.polymtl.ca/
• http://rick.vanrein.org/linux/badram/ provides support for damaged RAM
• oms
• heci (ubuntu kernel)
• gc-usb (ubuntu kernel)
• rfkill (ubuntu kernel) -- already in mainline? See Documentation/rfkill.txt in the current kernel tree
• tlsup (ubuntu kernel)
• via_chrome9 (ubuntu kernel)
• fasm7400 - rf kill switch for Fujitsu Siemens Amilo M7400 laptop (ubuntu kernel)
• thinkpad_ec - thinkpad embedded controller lpc3 functions, will not be accepted upstream due to authorship issues (written by an anonymous developer). (ubuntu kernel)
• tp_smapi - thinkpad SMAPI support, will not be accepted upstream due to authorship issues (written by an anonymous developer). (ubuntu kernel)
• oracleasm
• SGI "ProPack"
• fbcondor - framebuffer console decoration (gentoo kernel)
• airt - advanced incident response assistant tools - http://159.226.5.93/projects/airt.htm
• omnibook - HP laptop support http://sf.net/projects/omnibook
• tpctl - thinkpad system control kernel modules http://tpctl.sf.net
• usbirboy - homemade ir USB receiver http://usbirboy.sf.net/
• parapin - parallel port pin kernel module http://parapin.sf.net/
• legousb - lego mindstorms usb tower kernel driver http://legousb.sf.net/
• sysprof - system-wide profiler http://www.daimi.au.dk/~sandmann/sysprof/
• svgalib - svga graphics on the console http://www.svgalib.org/
• line6usb - usb driver for line6 PODs and the Variax workbench http://www.tanzband-scream.at/line6/
• packetcommand - driver for the em84xx dvd disc access http://www.htpc-forum.de
• em8300 - RealMagic? Hollywood+/Creative DXR3 video decoder driver http://dxr3.sf.net
• em84xx - em4xx based mpeg-decoder card driver http://sf.net/projects/em84xx/
• fsam7400 - software killswitch for F-S Amilo laptops and compatibles http://zwobbl.homelinux.net
• pcfclock - driver for the parallel port radio clock sold by Conrad Electronic http://www-stud.ims.uni-stuttgart.de/~voegelas/pcf.html
• rlocate - locate implementation that is always up-to-date http://rlocate.sf.net/
• Crash Utility memory driver http://people.redhat.com/anderson/ (included in Fedora kernel)
• utrace Infrastructure for tracing and debugging user processes: http://people.redhat.com/roland/utrace/ (included in Fedora kernel)
• asus_eee - interface for access to eeepc internals (e.g. fan speed): http://code.google.com/p/eeepc-linux/