logo
Develop and Download Open Source Software
Yesterday: 114,399 Downloads
Total: 58,273 Users, 79,642 Release Files
For OSS Distribution
In cooperation with organizations who are in support of open source software development and its use, OSDN provide a download environment of global scale covering all continents and a file-release environment for flexible upload.
For OSS Development
OSDN offer open source projects a full service lineup that includes source code repositories such as Git/Subversion/Mercurial/Bazaar, web-site hosting features, ticket system, web forums, mailing lists, together with a well-integrated and easy-to-use environment for web-based project management.

Download Ranking

MinGW - Minimalist GNU for Windows
MinGW: A native Windows port of the GNU Compiler Collection (GCC), with freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All of MinGW's software will execute on the 64bit Windows platforms.
CrystalDiskInfo
CrystalDiskInfo is a HDD/SSD utility software which supports S.M.A.R.T and a part of USB-HDD. Important Notice Both CrystalDiskInfo and CrystalDiskMark are open source software personally developed by me. Any software development demands huge amount of time and effort, and on top of that, new hardware devices are released one after another which becomes a necessity to purchase in order to support them. Therefore, this project needs more development funds. As to current status, this project is extremely short of funds and is in desperate need of your donations. If you want to contribute to supporting the continuance of this project, please make donations by Paypal . Please make the amount of each contribution $10 USD or more (in JPYen, 1000Yen or more) if possible. Your contributions will be deeply appreciated.
FFFTP
FFFTP is lightweight FTP client software. FFFTP has many useful feature such as directory mirroring, character encdoging conversion, Firewall and SOCK, one-time password support, and so on.
TortoiseSVN
TortoiseSVN is a Subversion (SVN) client, implemented as a windows shell extension. Which means it's available right where you need it: in the Windows file explorer. It's intuitive and easy to use, since it doesn't require the Subversion command line client to run. Simply the coolest Interface to (Sub)Version Control!
CrystalDiskMark
CrystalDiskMark is a disk benchmark software. Important Notice Both CrystalDiskInfo and CrystalDiskMark are open source software personally developed by me. Any software development demands huge amount of time and effort, and on top of that, new hardware devices are released one after another which becomes a necessity to purchase in order to support them. Therefore, this project needs more development funds. As to current status, this project is extremely short of funds and is in desperate need of your donations. If you want to contribute to supporting the continuance of this project, please make donations by Paypal . Please make the amount of each contribution $10 USD or more (in JPYen, 1000Yen or more) if possible. Your contributions will be deeply appreciated.

Active Projects

MinGW - Minimalist GNU for Windows
MinGW: A native Windows port of the GNU Compiler Collection (GCC), with freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All of MinGW's software will execute on the 64bit Windows platforms.
CrystalDiskInfo
CrystalDiskInfo is a HDD/SSD utility software which supports S.M.A.R.T and a part of USB-HDD. Important Notice Both CrystalDiskInfo and CrystalDiskMark are open source software personally developed by me. Any software development demands huge amount of time and effort, and on top of that, new hardware devices are released one after another which becomes a necessity to purchase in order to support them. Therefore, this project needs more development funds. As to current status, this project is extremely short of funds and is in desperate need of your donations. If you want to contribute to supporting the continuance of this project, please make donations by Paypal . Please make the amount of each contribution $10 USD or more (in JPYen, 1000Yen or more) if possible. Your contributions will be deeply appreciated.
人狼式 ~汝は人狼なりや?
汝は人狼なりや?は村人チームと人狼チームに分かれてプレイするテーブルゲームの一種です。詳しくは Wikipediaの説明 などをご覧ください。 このプロジェクトは紫炎サーバーなどで使用されているPHP版の短期決戦用...
FFFTP
FFFTP is lightweight FTP client software. FFFTP has many useful feature such as directory mirroring, character encdoging conversion, Firewall and SOCK, one-time password support, and so on.
Tera Term
Tera Term is Tera Term Pro 2.3 succession version and is being officially recognized by the original author. Tera Term is open source free software terminal emulator supporting UTF-8 protocol. Now TTSSH supports SSH2 protocol (Original version supports SSH1).

Site announcement

DSA SSH key authentication support will be discontinue on OSDN
2018-11-30 04:17: SSH DSA key support is not recommend and disabled per default since 2015 on openssh upstream release beacuase of weakness of the algorithm. So, We will stop to support of DSA key for OSDN ssh login. Date: 2018-12-31 (we will disable DSA key login in Jan. 2019) Affected services: Shell service login project SCM (git/svn/hg/bzr/cvs) access via SSH PersonalForge SCM (git/sv/hg) access via SSH https://osdn.net/account/editsshkeys.php You can check SSH keys you registered above url. If you have ssh-dss key, the key will not accept to use login for OSDN after Jan. 2019. You should use another typo of key.
Announcement Regarding New File Release Mirrors Set Up in the Hong Kong and Los Angeles
2018-11-13 07:06: We proudly announce the two new mirror sites that were set up in the Hong Kong and Los Angeles, for OSDN's file release system. All the files that were released through the use of file release system of OSDN's projects and chambers are mirrored by mirror servers that are managed by organizations who are in cooperation with OSDN's open source activities, and users who want to download these files will get them from one of the mirror sites. The organizations who manage the newly setup mirror servers are as follows. xTom Hong Kong Limited (Hong Kong, China) xTom.com Inc. (Los Angels, California, USA) OSDN will continue to keep looking for new mirror servers around the world to further support the activities of global open source projects.
Announcement Regarding New File Release Mirror Set Up in the Beijing, China
2018-09-26 07:45: We proudly announce the new mirror site that were set up in the Beijing (China), for OSDN's file release system. All the files that were released through the use of file release system of OSDN's projects and chambers are mirrored by mirror servers that are managed by organizations who are in cooperation with OSDN's open source activities, and users who want to download these files will get them from one of the mirror sites. The organization who manage the newly setup mirror servers are as follows. Tsinghua University TUNA Association (Beijing, China) OSDN will continue to keep looking for new mirror servers around the world to further support the activities of global open source projects.
New Functions Added to Forum Feature
2018-09-07 06:32: The following functions are added to the Forum Feature Now you can edit the message at the top of a thread afterward. Now you can use wiki syntax to post on a forum. You can also choose to keep the syntax that you’ve been using. For each forum, the settings can be set separately. The settings can be changed afterward. However, messages that were posted before the changes will keep the format of the previous settings and can not be changed afterward. (The changes added to the settings do not apply retroactively.) Link syntax for expressing forum/forum thread/forum message is put together on wiki. For further information, go to wiki help.
Virus Detection Feature on Project File Release
2018-06-26 05:01: System side will now perform Virus scan for files that are uploaded on project's file release. Scan result will be shown on the pages of a release list and such. For virus scanning, VirusTotal ( https://www.virustotal.com/) is used. VirusTotal checks for viruses by using multiple Virus detection engines in aggregated manner. Among these engines, there are a few very sensitive ones that frequently send false positives . Therefore, in rare occasions, virus warning message may appear against a practically and absolutely safe file. (Thus, even with the scan result from VirusTotal, the file cannot be immediately determined as dangerous.) Please review the detailed result to judge its safety. Also, this feature does not guarantee that a file is free of Virus infection, with its scan result. When there are a certain number of warnings as a result of detecting viruses, the result will be notified to the administer of the file project and the person in charge of the file release, by email. (Because a recheck may be performed after a certain period of time, there are cases that you may receive multiple notifications for a single file. ) If a file is judged to have a problem, the site admin side may make necessary measures such as making it private or deleting it. Due to the size limit on VirusTotal's API, virus scan for files that are over 350MB cannot be performed. Scan result will not be displayed immediately after the upload. (Due to the behavior of the VirusTotal, and the API's access limit, it will take at least 30 minutes, and there are even cases that could take a few days.)