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  1. Firefox - Wikipedia › wiki › Firefox

    1 day ago · Firefox source code is free software, with most of it being released under the Mozilla Public License (MPL) version 2.0. This license permits anyone to view, modify, or redistribute the source code. As a result, several publicly released applications have been built from it, such as Netscape , Flock , Miro , GNU IceCat , Iceweasel , Songbird ...

    • 97 languages
    • MPL 2.0
  2. Qt (software) - Wikipedia › wiki › Qt_Software
    • Purposes and Abilities
    • Qt Releases
    • Qt in Use
    • Qt Software Architecture
    • History of Qt
    • See Also
    • External Links

    Qt is used for developing graphical user interfaces (GUIs) and multi-platform applications that run on all major desktop platforms and most mobile or embedded platforms.Most GUI programs created with Qt have a native-looking interface, in which case Qt is classified as a widget toolkit. Also non-GUI programs can be developed, such as command-line tools and consoles for servers. An example of such a non-GUI program using Qt is the Cutelyst web framework. Qt supports various compilers, including the GCC C++ compiler, the Visual Studio suite, PHP via an extension for PHP5, and has extensive internationalization support. Qt also provides Qt Quick, that includes a declarative scripting language called QML that allows using JavaScriptto provide the logic. With Qt Quick, rapid application development for mobile devices became possible, while logic can still be written with native code as well to achieve the best possible performance. Other features include SQL database access, XML parsing,...

    The latest version is Qt 5.15.0, which was released on 26 May 2020. The current LTS version is Qt 5.15 LTS. It will be supported for 3 years. Also Qt 5.12 is LTS versionActual Version is 5.12.8. The initial release of Qt software was on 20 May 1995.

    In 2017, the Qt Company estimated a community of about 1 million developers worldwidein over 70 industries.

    Qt concepts

    Qt is built on these key concepts: Complete abstraction of the GUI 1. When first released, Qt used its own paint engine and controls, emulating the look of the different platforms it runs on when it drew its widgets. This made the porting work easier because very few classes in Qt really depended on the target platform; however, this occasionally led to slight discrepancies where that emulation was imperfect. Recent versions of Qt use the native style APIs of the different platforms, on platf...

    Qt modules

    Starting with Qt 4.0 the framework was split into individual modules. With Qt 5.0 the architecture was modularized even further. Qt is now split into essential and add-onmodules.


    There are four editions of Qt available: Community, Indie Mobile, Professional and Enterprise. The Community version is under the open source licenses, while the Indie Mobile, Professional and Enterprise versions, which contain additional functionality and libraries, e.g. Enterprise Controlsare commercially sold by The Qt Company.

    Early developments

    In the summer of 1990, Haavard Nord and Eirik Chambe-Eng (the original developers of Qt and the CEO and President, respectively, of Trolltech) were working together on a database application for ultrasound images written in C++ and running on Mac OS, Unix, and Microsoft Windows.They began development of "Qt" in 1991, three years before the company was incorporated as Quasar Technologies, then changed the name to Troll Tech and then to Trolltech. The toolkit was called Qt because the letter Q...

    Becoming free software–friendly

    With the release of version 2.0 of the toolkit, the license was changed to the Q Public License (QPL), a free software license, but one regarded by the Free Software Foundation as incompatible with the GPL. Compromises were sought between KDE and Trolltech whereby Qt would not be able to fall under a more restrictive license than the QPL, even if Trolltech was bought out or went bankrupt. This led to the creation of the KDE Free Qt foundation, which guarantees that Qt would fall under a BSD-s...

    Acquisition by Nokia

    Nokiaacquired Trolltech ASA on 17 June 2008 and changed the name first to Qt Software, then to Qt Development Frameworks. Nokia focused on turning Qt into the main development platform for its devices, including a port to the Symbian S60 platform. Version 1.0 of the Nokia Qt SDK was released on 23 June 2010. The source code was made available over Gitorious, a community oriented gitsource code repository, with a goal of creating a broader community using and improving Qt. On 14 January 2009,...

    • 20 May 1995; 25 years ago
    • 6.1 (6 May 2021; 5 days ago) [±]
    • Haavard Nord and Eirik Chambe-Eng
    • C++
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  4. OpenSolaris - Wikipedia › wiki › Project_Indiana

    May 27, 2021 · Sun has released most of the Solaris source code under the Common Development and Distribution License , which is based on the Mozilla Public License (MPL) version 1.1. The CDDL was approved as an open source license by the Open Source Initiative (OSI) in January 2005. Files licensed under the CDDL can be combined with files licensed under ...

  5. OPC Unified Architecture — Wikipedia Republished // WIKI 2 › en › OPC_Unified_Architecture
    • History
    • Innovations
    • Protocols
    • Specifications
    • Discussion
    • UA Communication Stack
    • UA Security
    • OPC UA Apis
    • See Also
    • Literature

    Al­though de­vel­oped by the same or­ga­ni­za­tion, OPC UA dif­fers sig­nif­i­cantly from its pre­de­ces­sor, Open Plat­form Com­mu­ni­ca­tions (OPC). The Foun­da­tion's goal for OPC UA was to pro­vide a path for­ward from the orig­i­nal OPC com­mu­ni­ca­tions model (namely the Mi­crosoft Win­dows-only process ex­change COM/DCOM) that would bet­ter meet the emerg­ing needs of in­dus­trial au­toma­tion. After more than three years of spec­i­fi­ca­tion work and an­other year for a pro­to­type im­ple­men­ta­tion, the first ver­sion of the Uni­fied Ar­chi­tec­ture was re­leased in 2006. The cur­rent ver­sion of the spec­i­fi­ca­tion is on 1.04 (22 No­vem­ber 2017). The new ver­sion of OPC UA now has added pub­lish/sub­scribe in ad­di­tion to the client/server com­mu­ni­ca­tions in­fra­struc­ture.

    Al­though the orig­i­nal bind­ing to COM/DCOM helped OPCto dis­trib­ute well, it had sev­eral draw­backs: 1. Frequent configuration issues with DCOM; 2. No configurable time-outs; 3. Microsoft Windowsonly; 4. Lower security; 5. No control over DCOM (COM/DCOM is kind of a black box, developers have no access to sources and therefore have to deal with bugs or insufficient implementations). These draw­backs along with a num­ber of other con­sid­er­a­tions pushed the de­ci­sion to de­velop a new and in­de­pen­dent stack for OPC UA, which re­places COM/DCOM. The main char­ac­ter­is­tics of this com­mu­ni­ca­tion stack were: 1. Multi-platform implementation, including portable ANSI C, Java and .NETimplementations; 2. Scalability: from smart sensors and smart actuators to mainframes; 3. Multi-threaded, as well as single-threaded/single-task operation—necessary for porting the stack to embedded devices; 4. Security, based on new standards; 5. Configurable time-outs for each service; 6. Chun...

    OPC UA sup­ports two protocols. This is vis­i­ble to ap­pli­ca­tion pro­gram­mers only via changes to the URL. The bi­nary pro­to­col is opc.​tcp://​Server and http://Server is for Web Ser­vice. Oth­er­wise OPC UA works com­pletely trans­par­ent to the API. The bi­nary pro­to­col of­fers the best per­for­mance/least over­head, takes min­i­mum re­sources (no XML Parser, SOAP and HTTPre­quired, which is im­por­tant for em­bed­ded de­vices), of­fers best in­ter­op­er­abil­ity (bi­nary is ex­plic­itly spec­i­fied and al­lows fewer de­grees of free­dom dur­ing im­ple­men­ta­tion) and uses a sin­gle ar­bi­trar­ily choos­able TCP port for com­mu­ni­ca­tion eas­ing tun­nel­ing or easy en­able­ment through a fire­wall. The Web Ser­vice (SOAP) pro­to­col is best sup­ported from avail­able tools, e.g., from Java or .NET en­vi­ron­ments, and is fire­wall-friendly, using stan­dard HTTP(S) ports. Bi­nary is sup­ported by all im­ple­men­ta­tions, while only .NET im­ple­men­ta­tion sup­ports SOAP.

    The OPC UA spec­i­fi­ca­tion is a multi-part spec­i­fi­ca­tion and con­sists of the fol­low­ing parts: 1. Concepts 2. Security Model 3. Address Space Model 4. Services 5. Information Model 6. Mappings 7. Profiles 8. Data Access 9. Alarms and Conditions 10. Programs 11. Historical Access 12. Discovery and Global Services 13. Aggregates 14. PubSub 15. Safety 16. State machines (not published yet) 17. Alias names 18. User Authorization (not published yet) 19. Dictionary References Ad­di­tion­ally, part 100 De­vices, and part 200 In­dus­trial Au­toma­tion are also avail­able. These build on the core set of spec­i­fi­ca­tions, and adds new com­mon de­f­i­n­i­tions that then are used in dif­fer­ent com­pan­ion spec­i­fi­ca­tions. E.g. both OPC UA for Analyser Devices and OPC UA for Machinerybuilds di­rectly on part 100. In con­trast to the COM-based spec­i­fi­ca­tions, the UA spec­i­fi­ca­tions are not pure ap­pli­ca­tion spec­i­fi­ca­tions. They de­scribe typ­i­cally UA in­ter­nal mech­a...

    The OPC UA pro­to­col spec­i­fi­ca­tion con­sists of 14 doc­u­ments for a total of 1250 pages. Due to this com­plex­ity, ex­ist­ing im­ple­men­ta­tions are usu­ally in­com­plete. In ad­di­tion, the ex­is­tence of sev­eral se­ri­al­iza­tion for­mats, as well as the pos­si­bil­ity of se­lec­tively im­ple­ment­ing cer­tain ser­vices such as Pub­Sub, even­tu­ally lead to a great het­ero­gene­ity of the OPC UA con­nec­tion points. Under these con­di­tions, it is fi­nally dif­fi­cult to de­velop client ap­pli­ca­tions that are in­de­pen­dent of the spe­cific im­ple­men­ta­tion of each server. In this sense, OPC UA does not achieve its promise of en­sur­ing good in­ter­op­er­abil­ity of sys­tems. This can be seen typ­i­cally in fac­tory and in­fra­struc­ture pro­jects in­te­grat­ing var­i­ous PLC tech­nolo­gies, each de­liv­ered with a dif­fer­ent and lim­ited im­ple­men­ta­tion of the OPC UA pro­to­col. The spec­i­fi­ca­tion is still evolv­ing, the last spec­i­fi­ca­tion doc­u­ment vol­um...

    The ar­chi­tec­ture of a UA ap­pli­ca­tion, in­de­pen­dent of whether it is the server or client part, is struc­tured into lev­els. Some parts equal­ize to the for­mer COM Proxy/Stubs and get pro­vided by the OPC Foun­da­tion. The porta­bil­ity level is new; it sim­pli­fies port­ing the UA ANSI C stack to other tar­get plat­forms. A port layer for Win­dows and Linuxis also pro­vided by the OPC Foun­da­tion.

    UA Se­cu­rity con­sists of au­then­ti­ca­tion and au­tho­riza­tion, en­cryp­tion and data in­tegrity via sig­na­tures. For Web Ser­vices the WS-Se­cure­Con­ver­sa­tion gets used and is there­fore com­pat­i­ble to .NET and other SOAPim­ple­men­ta­tions. For the bi­nary vari­ant, the al­go­rithms of WS-Se­cure­Con­ver­sa­tion have been fol­lowed and also con­verted to a bi­nary equiv­a­lent. This is named as UA Se­cure Con­ver­sa­tion. There is also a mixed ver­sion where the code is bi­nary, but the trans­port layer is SOAP. This is a com­pro­mise be­tween ef­fi­cient bi­nary cod­ing and fire­wall-friendly trans­mis­sion. Bi­nary cod­ing al­ways re­quires UA Se­cure Con­ver­sa­tion.The au­then­ti­ca­tion uses X.509 cer­tifi­cates ex­clu­sively. It re­lies on the ap­pli­ca­tion de­vel­oper to choose which cer­tifi­cate store the UA ap­pli­ca­tion gets bound to. For in­stance, it is pos­si­ble to use the pub­lic key in­fra­struc­ture (PKI) of an Ac­tive Di­rec­tory.

    UA APIs are avail­able in sev­eral pro­gram­ming lan­guages. Com­mer­cial SDK are avail­able for C, C++, Java, and .NET. Open-source stacks are avail­able at least for C, C++, Java, Javascript(node), Tcl and Python .

    Wolfgang Mahnke, Stefan-Helmut Leitner, Matthias Damm: OPC Unified Architecture. Springer Verlag 2009; ISBN 978-3-540-68898-3
    Lange, J., Iwanitz, F., Burke, T. OPC From Data Access to Unified Architecture 2010; ISBN 978-3-8007-3242-5
  6. Tor (network) - › en › Tor_(network)

    Jun 03, 2021 · (16 March 2021; 2 months ago (2021-03-16)[2]) Tor is free and open-source software for enabling anonymous communication. It directs Internet traffic through a free, worldwide, volunteer overlay network, consisting of more than seven thousand relays,[5] for concealing a user's location and us

  7. May 20, 2021 · Bug 1711063 - Part 4: Add the ability to pass an allocation site when assembling inline allocations r?jandem Summary: For baseline allocations we still want to track the allocations made and update the AllocSite whereas for optimized code we want to ignore this entirely and use the catch-all optimzed site for tracked allocation sites.

  8. m-c: hal/Hal.h@ab4e65106302cb9f55f8a0269aca4a7249ababf5 › conduit-testing › m-c

    May 20, 2021 · Content of hal/Hal.h at revision ab4e65106302cb9f55f8a0269aca4a7249ababf5 in m-c

  9. voice reading text free download - SourceForge › directory

    May 22, 2021 · Mozilla Public License 1.1 2; ... It's especially intended to make Wikipedia available offline. With Kiwix, you can enjoy Wikipedia on a boat, in the middle of ...

  10. config/ - › conduit-testing › m-c

    May 22, 2021 · Content of config/ at revision fba6f974041a3d3c22ef95c44f6e4262e8e5c52f in m-c

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