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X-Face
An X-Face is a small bitmap (48 × 48 pixels, black and white) image which is added to a Usenet posting or e-mail message, typically showing a picture of the author's face. The image data is included in the posting as encoded text, and attached with an 'X-Face' Header (computing), header. It was devised by James Ashton. It is one of the outgrowths of the Vismon program developed at Bell Labs in the 1980s. While many programs support X-Face, most of them are free software and based on Unix or its variations, such as KMail or Sylpheed. The most common email programs though, as used in business and most domestic environments, do not handle X-Face natively, and the information is silently ignored. Even where Unix is widely used (university and research environments), it has never been adopted to maximum potential (for example, by searching for senders by X-Face). A further development is the Face header developed in 2005, which also allows for color images in Portable Network Grap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
X BitMap
In computer graphics, the X Window System used X BitMap (XBM), a plain text binary image format, for storing cursor and icon bitmaps used in the X GUI. The XBM format is superseded by XPM, which first appeared for X11 in 1989. Format XBM files differ markedly from most image files in that they take the form of C source files. This means that they can be compiled directly into an application without any preprocessing steps, but it also makes them far larger than their raw pixel data. The image data is encoded as a comma-separated list of byte values, each written in the C hexadecimal notation, '0x13' for example, so that multiple ASCII characters are used to express a single byte of image information. XBM data consists of a series of static unsigned char arrays containing the monochrome pixel data. When the format was in common use, an XBM typically appeared in headers (.h files) which featured one array per image stored in the header. The following piece of C code exempli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Netpbm
Netpbm (formerly Pbmplus) is an open-source software, open-source package of graphics programs and a programming library. It is used primarily in Unix, where it is found in all major open-source operating system distributions, but also works on Microsoft Windows, macOS, and other operating systems. File formats Several graphics formats are used and defined by the Netpbm project: * portable bitmap format (PBM) * portable graymap format (PGM) * portable pixmap format (PPM) PBM, PGM and PPM, sometimes collectively referred to as the portable anymap format (PNM) are image file formats designed to be easily exchanged between platforms. The Magic number (programming), magic number at the beginning of a file determines the type. PNM files use a magic number of an ASCII "P" followed by a number defining the file type. The PBM format was invented by Jef Poskanzer in the 1980s. The format allowed monochrome bitmaps to be transmitted within an email message as plain ASCII text, so that it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FFmpeg
FFmpeg is a free and open-source software project consisting of a suite of libraries and programs for handling video, audio, and other multimedia files and streams. At its core is the command-line ffmpeg tool itself, designed for processing video and audio files. It is widely used for format transcoding, basic editing (trimming and concatenation), video scaling, video post-production effects, and standards compliance ( SMPTE, ITU). FFmpeg also includes other tools: ffplay, a simple media player, and ffprobe, a command-line tool to display media information. Among included libraries are libavcodec, an audio/video codec library used by many commercial and free software products, libavformat (Lavf), an audio/video container mux and demux library, and libavfilter, a library for enhancing and editing filters through a GStreamer-like filtergraph. FFmpeg is part of the workflow of many other software projects, and its libraries are a core part of software media players such as V ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vismon
Vismon was the Bell Labs system which displayed authors' faces on one of their internal e-mail systems. The name was a pun on the ''sysmon'' program used at Bell to show the load on computer systems. It can also be interpreted as "visual monitor". The system inspired Rich Burridge to develop the similar but more widespread ''faces'' system, which spread with Unix distributions in the 1980s. This in turn inspired Steve Kinzler to develop the ''Picons'', or personal icons, which have the goal of offering symbols and other images, as well as faces, to represent individuals and institutions in email messages. Other systems such as the faces available on the LAN email functions of the NeXTSTEP platform also seem to have been influenced by the original Vismon capabilities. The ''faces'' program in Plan 9 is the direct descendant of this system. Vismon was the work of Rob Pike and Dave Presotto. It was based on some early experiments by Luca Cardelli. Many other scientists and enginee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
KMail
Kontact is a personal information manager and groupware software suite developed by KDE. It supports calendars, contacts, notes, to-do lists, news, and email. It offers a number of inter-changeable graphical UIs (KMail, KAddressBook, Akregator, etc.) all built on top of a common core. Differences between "Kontact" and "KDE PIM" Technically speaking, ''Kontact'' only refers to a small umbrella application that unifies different stand-alone applications under one user interface. ''KDE PIM'' refers to a work group within the larger KDE project that develops the individual applications in a coordinated way. In popular terms, however, ''Kontact'' often refers to the whole set of ''KDE PIM'' applications. These days many popular Linux distributions such as Kubuntu hide the individual applications and only place ''Kontact'' prominently. History The initial groupware container application was written in an afternoon by Matthias Hölzer-Klüpfel and later imported into the KDE sou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mozilla Thunderbird
Mozilla Thunderbird is a free and open-source email client that also functions as a personal information manager with a Digital calendar, calendar and contactbook, as well as an RSS feed reader, chat client (IRC/XMPP/Matrix (protocol), Matrix), and news client. Operated by MZLA Technologies Corporation, a subsidiary of the Mozilla Foundation, Thunderbird is an independent, community-driven project that is managed and overseen by the Thunderbird Council, which is elected by the Thunderbird community. As a cross-platform application, Thunderbird is available for Windows, macOS, FreeBSD, Android (operating system), Android, and Linux. The project strategy was originally modeled after that of Mozilla's Firefox, and Thunderbird is an interface built on top of that Web browser. Overview General Thunderbird is an e-mail, newsgroup, news feed, and instant messaging client with personal information manager (PIM) functionality, inbuilt since version 78.0 and previously available from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brand Indicators For Message Identification
Brand Indicators for Message Identification, or BIMI (), is a specification allowing for the display of brand logos next to authenticated e-mails. Design There are two parts to BIMI: a method for domain owners to publish the location of their indicators, and a means for mail transfer agents (MTAs) to verify the authenticity of the indicator. To implement BIMI, companies need a valid DMARC DNS record with a policy of either quarantine or reject, an exact square logo for the brand in SVG Tiny P/S format, and a DNS TXT record for the domain indicating the URI location of the SVG file. The only supported transport for the SVG URI is HTTPS. The BIMI DNS record is in the following format: (The a= part is optional. When present, it defines an ''evidence document''; the only current form of this file is called a Verified Mark Certificate (VMC), described below. When absent, the BIMI record is considered ''self-asserted''.) Additionally, services such as Gmail require that a VMC ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IChat
iChat (previously iChat AV) is a discontinued instant messaging software application developed by Apple Inc. for use on its Mac OS X operating system. It supported instant text messaging over XMPP/Jingle or OSCAR ( AIM) protocol, audio and video calling, and screen-sharing capabilities. It also allowed for local network discussion with users discovered through Bonjour protocols. In OS X 10.8 Mountain Lion, iChat was replaced by Messages for chat and FaceTime for video calling. History iChat was first released in August 2002 as part of Mac OS X 10.2. It featured integration with the Address Book and Mail applications and was the first officially supported AIM client that was native to Mac OS X (the first-party AIM application at the time was still running in Classic emulation). One episode of the first season of the HBO dramedy series '' Entourage'' had Eric Murphy having an iChat conversation with Ari Gold, marking the first time that this application was used on a telev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mail (Apple)
Mail, also known as Apple Mail, is an email client included by Apple Inc. with its operating systems macOS, iOS, iPadOS, watchOS, and visionOS. Mail grew out of NeXTMail, which was originally developed by NeXT as part of its NeXTSTEP operating system, after Apple's acquisition of NeXT in 1997. The current version of Mail utilizes SMTP for message sending, POP3, Exchange and IMAP for message retrieval and S/MIME for end-to-end message encryption. It is also preconfigured to work with popular email providers, such as Yahoo! Mail, AOL Mail, Gmail, Outlook and iCloud (formerly MobileMe) and it supports Exchange. iOS features a mobile version of Mail with added Exchange ActiveSync (EAS) support, though it notoriously missed the functionality of attaching files to reply emails until the release of iOS 9. EAS is not supported in the macOS version of Apple's Mail app, the main issue being that sent messages will incorrectly be duplicated in the sent messages folder, which then pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sylpheed
Sylpheed is an open-source e-mail client and news client licensed under GNU GPL-2.0-or-later with the library part ''LibSylph'' under GNU LGPL-2.1-or-later. It provides easy configuration and an abundance of features. It stores mail in the MH Message Handling System. Sylpheed runs on Unix-like systems such as Linux or BSD, and it is also usable on Windows. It uses GTK+. In 2005, Sylpheed was forked to create Sylpheed-Claws, now known as Claws Mail."Sylpheed-Claws 1.0.0 unleashed!!" 18 January 2005. As of 2020, both projects continue to be developed independently. Sylpheed is the default mail client in , [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portable Network Graphics
Portable Network Graphics (PNG, officially pronounced , colloquially pronounced ) is a raster graphics, raster-graphics file graphics file format, format that supports lossless data compression. PNG was developed as an improved, non-patented replacement for Graphics Interchange Format (GIF). PNG supports palette-based images (with palettes of 24-bit RGB color model, RGB or 32-bit RGBA color space, RGBA colors), grayscale images (with or without an Alpha compositing, alpha channel for transparency), and full-color non-palette-based RGB or RGBA images. The PNG working group designed the format for transferring images on the Internet, not for professional-quality print graphics; therefore, non-RGB color spaces such as CMYK color model, CMYK are not supported. A PNG file contains a single image in an extensible structure of ''chunks'', encoding the basic pixels and other information such as textual comments and Integrity checker, integrity checks documented in Request for Comments ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
