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The Application Configuration Access Protocol (ACAP) is a protocol for storing and synchronizing general configuration and preference data. It was originally developed so that
IMAP In computing, the Internet Message Access Protocol (IMAP) is an Internet standard protocol used by email clients to retrieve email messages from a mail server over a TCP/IP connection. IMAP is defined by . IMAP was designed with the goal of per ...
clients can easily access
address book An address book or a name and address book is a book, or a database used for storing entries, called contacts. Each contact entry usually consists of a few standard fields (for example: first name, last name, company name, address, telephone numb ...
s, user options, and other data on a central server and be kept in synch across all clients. Two International ACAP Conferences were held, one in Pittsburgh, PA, USA, in 1997, and the other at Qualcomm Incorporated, San Diego, CA, USA, in February 1998. ACAP grew to encompass several other areas, including bookmark management for web browsers—it's effectively a roaming protocol for
Internet The Internet (or internet) is the Global network, global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) to communicate between networks and devices. It is a internetworking, network of networks ...
applications. ACAP is in use by at least four clients and three servers to varying degrees, but it has never achieved the popularity of
Lightweight Directory Access Protocol The Lightweight Directory Access Protocol (LDAP ) is an open, vendor-neutral, industry standard application protocol for accessing and maintaining distributed directory information services over an Internet Protocol (IP) network. Directory serv ...
or
SyncML SyncML, or Synchronization Markup Language, was originally developed as a platform-independent standard for information synchronization. Established by the SyncML Initiative, this project has evolved to become a key component in data synchroniza ...
. It is a deceptively simple protocol, but the combination of three key features, hierarchical data, fine-grained access control, and "contexts" or saved searches with notification, has caused serious problems for server implementors. Unlike LDAP, ACAP was designed for frequent writes, disconnected mode access (meaning clients can go offline and then resynchronize later), and so on. It also handles data inheritance, sometimes known as stacking, which provides easy creation of defaults. The
IETF The Internet Engineering Task Force (IETF) is a standards organization for the Internet standard, Internet and is responsible for the technical standards that make up the Internet protocol suite (TCP/IP). It has no formal membership roster ...
ACAP Working Group ceased activity in April 2004, having released two RFCs, ("ACAP — Application Configuration Access Protocol") and ("Anonymous SASL Mechanism").


See also

* Kolab *
iCalendar The Internet Calendaring and Scheduling Core Object Specification (iCalendar) is a media type which allows users to store and exchange calendaring and scheduling information such as events, to-dos, journal entries, and free/busy information, ...
*
WebDAV WebDAV (Web Distributed Authoring and Versioning) is a set of extensions to the Hypertext Transfer Protocol (HTTP), which allows user agents to collaboratively author contents ''directly'' in an HTTP web server by providing facilities for conc ...
*
CalDAV Calendaring Extensions to WebDAV, or CalDAV, is an Internet standard allowing a client to access and manage calendar data along with the ability to schedule meetings with users on the same or on remote servers. It lets multiple users in differe ...
* IMSP


References


Further reading

* "Your E-Mail Is Obsolete", ''
Byte The byte is a unit of digital information that most commonly consists of eight bits. Historically, the byte was the number of bits used to encode a single character of text in a computer and for this reason it is the smallest addressable un ...
'', February 1997


External links


CMU smlacapd
{{URI scheme Internet mail protocols