About RINEARN
Representative
Fumihiro Matsui
* Applied Information Technology Engineer (Japanese National Qualification), Ph.D. in Science (Physics)
» Greeting from the Representative
Business Type
Sole Proprietorship (Business name: RINEARN)
Business Activities
Primarily working as a subcontractor and freelance engineer:
Contracted software development, various outsourcing/support services for development and analysis, and customization/support for existing software.
Contribution Activities (Freeware, etc.)
RINEARN has developed and publicly released several pieces of freeware, including RINEARN Graph 3D, with a primary focus on analysis. These programs are offered as a way of giving back for the many free software and libraries that the representative relied on during his student years for analysis and computation. Feel free to use them as you like.
Location
Kyoto, Japan
Contact Us
» Please visit our contact page.
We also welcome your feedback and comments on our free software. Don’t hesitate to reach out if you have any questions.
History
RINEARN was established in 2009 as a distribution site for self-developed freeware. In 2018, it officially launched as a sole proprietorship studio, starting contracted software development and various outsourcing/support services.
Media Appearances
- Vector Software News (June 10, 2010, Web media)
- Monthly Mr.PC September 2010 Issue (July 24, 2010, Magazine in Japan)
- Monthly Mr.PC June 2011 Issue (April 24, 2011, Magazine in Japan)
- Free-Soft-no-Dendou (July 15, 2011, Mook magazine in Japan)
- Vector Software News (July 30, 2014, Web media)
News
Exevalatorv2.4Released—MCPSupportAdded,NowUsableasanAICalculationTool
2025-11-15 -
We'vereleasedExevalatorv2.4,ourexpression-evaluationlibrary.Startingwiththisversion,itsupportsMCP,makingitusableasacalculationtoolforAIassistants.
Exevalatorv2.3Released—NowUsablefromPython
2025-11-04 -
We'vereleasedExevalatorv2.3.Startingwiththisversion,youcannowuseitfromPython!WithgrowingdemandaroundAItooldevelopmentinmind,wesharethedetailshere.
ExevalatorUpdated—EasyJapaneseLocalizationforErrorMessages
2025-10-31 -
Exevalator2.2.2isout.YoucannowlocalizeerrormessagestoJapanesewithasimplecopy-and-paste,andwe'veincludedseveralbugfixesandminorparseradjustments.
InsideRINPnOnline:ArchitectureOverview
2025-10-22 -
AninsidelookatthearchitectureoftherecentlylaunchedonlineversionoftheRINPnscientificcalculator.It'sopensource,soyoucanfreelymodifyandreuseittobuildyourownwebcalculator(maybe!).
MeetRINPnOnline:UsetheScientificCalculatorAnywhere,Instantly
2025-10-21 -
RINPn,thefreescientificcalculator,nowhasanonlineversionyoucanuseinstantlyinyourbrowser—onbothPCandsmartphones.Readtheannouncementfordetails.
TheVCSSLSupportAIisHere!—RequiresaChatGPTPlusAccountforPracticalPerformance
2025-08-19 -
AnewAIassistantfortheVCSSLprogramminglanguageisheretoansweryourquestionsandhelpwithcoding.ThisarticleexplainshowtouseitandshowcasesplentyofrealQ&Aandgeneratedcodeexamples.
EnglishDocumentationforOurSoftwareandVCSSLIsNowNearlyComplete
2025-06-30 -
We'rehappytoannouncethatthelarge-scaleexpansionofourEnglishdocumentationwiththesupportofAI—aprojectthatbegantwoyearsago—hasnowreacheditsinitialtargetmilestone.
VCSSL3.4.52Released:EnhancedIntegrationwithExternalProgramsandMore
2025-05-25 -
Thisupdateintroducesenhancementstotheexternalprogramintegrationfeatures(e.g.,forrunningC-languageexecutables).Severalotherimprovementsandfixesarealsoincluded.Detailsinside.
Released:LatestVersionofVCSSLwithFixesforBehavioralChangesonJava24
2025-04-22 -
VCSSL3.4.50releasedwithafixforasubtlebehavioralchangeinabsolutepathresolutiononnetworkdrives,introducedinJava24.Detailsinside.
ReleasedtheLatestVersionsofRINEARNGraphandVCSSL-NowSupportingCustomizableTickPositionsandLabels!
2024-11-24 -
Startingwiththisupdate,anew"MANUAL"tickmodeisnowsupported,allowinguserstofreelyspecifythepositionsandlabelsofticksonthegraph.We'llexplainthedetailsandhowtouseit.