macOS
Homebrewverified · 100%
brew install libdaplocal Homebrew formula metadata
MacPortsverified · 94%
sudo port install libdapMacPorts ports tree · science/libdap/Portfile · source: api.github.com
brew
Install libdap with Homebrew, apt, dnf, MacPorts
Framework for scientific data networking. Version 3.21.1 via Homebrew; verified 2026-06-07.
install
Additional install commands
Linux
Debian aptverified · 92%
sudo apt install libdap-binDebian stable package indexes · libdap-bin · source: deb.debian.org
Fedora dnfverified · 92%
sudo dnf install libdapFedora Rawhide package metadata · libdap · source: dl.fedoraproject.org
overview
Package summary
Framework for scientific data networking
Project links
Commands and aliases
- dap-config
- dap-config-pkgconfig
- getdap
- getdap4
history
Project history and usage
libdap is OPeNDAP's C++ implementation of the Data Access Protocol family, carrying the DAP2 heritage forward while adding DAP4 support. In package-manager terms it is the client and server library substrate behind tools such as getdap and getdap4 rather than an end-user science application by itself.
Project history
OPeNDAP grew out of the Distributed Oceanographic Data System work in the ocean-science community, with OPeNDAP Inc. formed in 2000 to maintain and evolve the protocol and software. The library history reflects that migration from older DODS/libdap++ organization into a standalone libdap module and then the libdap4 repository for DAP2 and DAP4 support.
The 2005 libdap 3.5.0 beta release notes describe the old DODS CVS module being split into a new libdap module, new install paths, renamed utilities getdap and dap-config, and early DDX work aimed at later DAP protocol evolution. Later libdap4 release notes record C++11 migration, DAP4 API work, large-array handling, direct I/O support, and the getdap4 command-line client.
Adoption history
DAP2 was approved as a NASA Earth Science Data Systems standard in 2005, and OPeNDAP describes later adoption across servers, web applications, MATLAB, Ferret, PyFerret, PyDAP, and other scientific-data tools. OPeNDAP's releases page also notes libdap's use by the Hyrax server and inclusion in Linux distributions such as EPEL.
The library matters most in earth-science and distributed-data stacks where HTTP-accessible array datasets need subsetting without downloading full files. It is part of the infrastructure lineage that also intersects with Hyrax, BES, OLFS, netCDF-oriented workflows, PyDAP, and DAP4 documentation.
How it is used
Package users usually encounter libdap through linked scientific applications, server components, dap-config, or the getdap/getdap4 command-line clients. Its ~/.dodsrc configuration and ~/.netrc credential support are package-nerd clues that the library also participates in authenticated remote data access workflows.
Why package nerds care
libdap is a classic scientific Unix library package: protocol implementation, C++ ABI concerns, autotools/CMake build history, command-line probes, and downstream distribution packaging all meet in one formula. It is significant less for UI visibility than for enabling remote scientific data access across many consumers.
Timeline
- 2000: OPeNDAP Inc. was formed to maintain and evolve the DODS data-access protocol.
- 2005: DAP2 was approved as a NASA Earth Science Data Systems standard.
- 2005: libdap 3.5.0 beta split the old DODS CVS layout into a standalone libdap module and renamed utilities such as getdap and dap-config.
- 2014: OPeNDAP history describes DAP4 release work under the OPULS program.
- 2022: libdap 3.20.x releases continued DAP4 API, RHEL, C++11, and Hyrax support work.
- 2025: libdap4 API documentation was generated for version 3.21.1.
Related projects
- Hyrax, BES, and OLFS are closely related OPeNDAP server-side projects. PyDAP, Ferret, PyFerret, MATLAB OPeNDAP support, netCDF-oriented clients, and DAP2/DAP4 specifications are adjacent parts of the same scientific-data ecosystem.
Sources
security posture
Risk level: blue
broad file, network, media, or database tool signal.
Risk classifier
blue risk · medium confidence · tool
Why
- broad file, network, media, or database tool signal
Signals
- text:network
Install behavior
- No Homebrew post-install hook is recorded in formula metadata.
- Homebrew bottle metadata is available for 6 platform targets.
- Installs with 2 runtime dependencies.
- Build metadata lists 2 build dependencies.
Recommended review
Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.
local files
Configuration and credential file locations
These source-backed paths show where this package keeps local settings or durable credentials. Automic Vault can use them as review targets for secret scanning, migration, and command approval.
Configuration files
Config paths the tool may read or write during local use.
- Unix
~/.dodsrc
Credential files
Credential-bearing paths to review before unattended agent runs.
- Unix
~/.netrc
executables
Installed executables
| Command | Kind | Exposure | Note |
|---|---|---|---|
dap-config | cli | global executable | |
dap-config-pkgconfig | cli | global executable | |
getdap | cli | global executable | |
getdap4 | cli | global executable |
freshness
Version and freshness
These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.
page generated2026-07-08
manager version3.21.1
manager updated2026-06-07
local dataok
upstreamnot checked
latest detectednot detected
- infoRelease/tag comparison is only available for GitHub repositories.https://www.opendap.org/none confidence
install metadata
Package metadata
| Package key | brew:libdap |
|---|---|
| Version | 3.21.1 |
| Package manager | Homebrew |
| Package manager page | https://formulae.brew.sh/formula/libdap |
| Homepage | https://www.opendap.org/ |
| Repository | https://github.com/OPENDAP/libdap4 |
| Upstream docs | https://docs.opendap.org/index.php/Libdap |
| License | LGPL-2.1-or-later |
| Source archive | https://www.opendap.org/pub/source/libdap-3.21.1.tar.gz |
| Last updated | 2026-06-07T14:59:57-04:00 |
| Pulse | updated |
| Dependencies | libxml2, openssl@3 |
| Build dependencies | bison, pkgconf |
| Uses from macOS | curl |
| Bottle | available (on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux) |
| Homebrew post-install | not defined |
| Service | none declared |
registry facts
Source database details
| Source Database | Homebrew formula API |
|---|---|
| Tap | homebrew/core |
| Full Name | libdap |
| Version Scheme | 0 |
| Revision | 1 |
| Head Version | HEAD |
| Bottle Stable Root URL | https://ghcr.io/v2/homebrew/core |
| Deprecated | no |
| Disabled | no |
| Keg Only | no |
| URL Keys |
|
source database matches
Other package-manager records
Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.
Debian apt95%
libdap-bin 3.21.1-2
Binaries for the libdap Data Access Protocol library
sudo apt install libdap-bin- Section: utils
- Architecture: amd64
- Source Package: libdap
- 5 dependencies
- normalized package name match
- Matched by: Libdap
Debian apt95%
libdap-dev 3.21.1-2
Development files (headers and static libraries) for libdap
sudo apt install libdap-dev- Section: libdevel
- Architecture: amd64
- Source Package: libdap
- 9 dependencies
- normalized package name match
- Matched by: Libdap
Debian apt95%
libdap-doc 3.21.1-2
Documentation for the libdap Data Access Protocol library
sudo apt install libdap-doc- Section: doc
- Architecture: all
- Source Package: libdap
- 1 dependencies
- normalized package name match
- Matched by: Libdap
Debian apt95%
libdap27t64 3.21.1-2
Open-source Project for a Network Data Access Protocol library
sudo apt install libdap27t64- Section: libs
- Architecture: amd64
- Source Package: libdap
- 5 dependencies
- 1 provides
- normalized package name match
- Matched by: Libdap
Debian apt95%
libdapclient6t64 3.21.1-2
Client library for the Network Data Access Protocol
sudo apt install libdapclient6t64- Section: libs
- Architecture: amd64
- Source Package: libdap
- 5 dependencies
- 1 provides
- normalized package name match
- Matched by: Libdap
Debian apt95%
libdapserver7t64 3.21.1-2
Server library for the Network Data Access Protocol
sudo apt install libdapserver7t64- Section: libs
- Architecture: amd64
- Source Package: libdap
- 5 dependencies
- 1 provides
- normalized package name match
- Matched by: Libdap
Ubuntu apt95%
libdap-bin 3.21.0-1.1build4
Binaries for the libdap Data Access Protocol library
sudo apt install libdap-bin- Section: universe/utils
- Architecture: amd64
- Source Package: libdap
- 5 dependencies
- normalized package name match
- Matched by: Libdap
Ubuntu apt95%
libdap-dev 3.21.0-1.1build4
Development files (headers and static libraries) for libdap
sudo apt install libdap-dev- Section: universe/libdevel
- Architecture: amd64
- Source Package: libdap
- 9 dependencies
- normalized package name match
- Matched by: Libdap
Ubuntu apt95%
libdap-doc 3.21.0-1.1build4
Documentation for the libdap Data Access Protocol library
sudo apt install libdap-doc- Section: universe/doc
- Architecture: all
- Source Package: libdap
- 1 dependencies
- normalized package name match
- Matched by: Libdap
Ubuntu apt95%
libdap27t64 3.21.0-1.1build4
Open-source Project for a Network Data Access Protocol library
sudo apt install libdap27t64- Section: universe/libs
- Architecture: amd64
- Source Package: libdap
- 5 dependencies
- 1 provides
- normalized package name match
- Matched by: Libdap
Ubuntu apt95%
libdapclient6t64 3.21.0-1.1build4
Client library for the Network Data Access Protocol
sudo apt install libdapclient6t64- Section: universe/libs
- Architecture: amd64
- Source Package: libdap
- 5 dependencies
- 1 provides
- normalized package name match
- Matched by: Libdap
Ubuntu apt95%
libdapserver7t64 3.21.0-1.1build4
Server library for the Network Data Access Protocol
sudo apt install libdapserver7t64- Section: universe/libs
- Architecture: amd64
- Source Package: libdap
- 5 dependencies
- 1 provides
- normalized package name match
- Matched by: Libdap
dnf95%
libdap 3.21.1-2.fc44
The C++ DAP2 and DAP4 library from OPeNDAP
sudo dnf install libdap- License: LGPL-2.1-or-later
- Category: Unspecified
- Architecture: i686
- Source Package: libdap
- 9 dependencies
- 5 provides
- normalized package name match
- Matched by: Libdap
dnf95%
libdap-devel 3.21.1-2.fc44
Development and header files from libdap
sudo dnf install libdap-devel- License: LGPL-2.1-or-later
- Category: Unspecified
- Architecture: i686
- Source Package: libdap
- 10 dependencies
- 2 provides
- normalized package name match
- Matched by: Libdap
dnf95%
libdap-doc 3.21.1-2.fc44
Documentation of the libdap library
sudo dnf install libdap-doc- License: LGPL-2.1-or-later
- Category: Unspecified
- Architecture: x86_64
- Source Package: libdap
- 1 provides
- normalized package name match
- Matched by: Libdap
MacPorts95%
libdap
sudo port install libdap- normalized package name match
- Matched by: Libdap
source trail
Generated from repository data
This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.
Combined YAML source
View the package source record on GitHub.
Used sources
- Geiger risk classifier
- Nucleus package database
- av.db category and tag curation
- cross-ecosystem install command graph
- curated configuration and credential file locations
- curated package history
- external package-manager database matches
- package relationship graph
- package version freshness
- package-page enrichment