| haskellPackages.wai-extra | Provides some basic WAI handlers and middleware |
| perlPackages.TestObject | Thoroughly testing objects via registered handlers |
| perl5Packages.TestObject | Thoroughly testing objects via registered handlers |
| package-version-server | Language server that handles hover information in package.json files |
| librdf_rasqal | Library that handles Resource Description Framework (RDF) |
| haskellPackages.snap-stream | Streaming Snap handlers |
| perlPackages.IOTee | Multiplex output to multiple output handles |
| haskellPackages.ngx-export-log | Native Nginx logging from configuration files and Haskell handlers |
| perl5Packages.IOTee | Multiplex output to multiple output handles |
| perl540Packages.TestObject | Thoroughly testing objects via registered handlers |
| perl538Packages.TestObject | Thoroughly testing objects via registered handlers |
| haskellPackages.bluefin-algae | Algebraic effects and named handlers in Bluefin |
| haskellPackages.salvia-extras | Collection of non-fundamental handlers for the Salvia web server |
| haskellPackages.knob | Memory-backed handles |
| haskellPackages.redHandlers | Monadic HTTP request handlers combinators to build a standalone web apps |
| luaPackages.busted-htest | A pretty output handler for Busted |
| perl540Packages.IOTee | Multiplex output to multiple output handles |
| perl538Packages.IOTee | Multiplex output to multiple output handles |
| lua53Packages.busted-htest | A pretty output handler for Busted |
| lua52Packages.busted-htest | A pretty output handler for Busted |
| lua51Packages.busted-htest | A pretty output handler for Busted |
| lua55Packages.busted-htest | A pretty output handler for Busted |
| lua54Packages.busted-htest | A pretty output handler for Busted |
| perlPackages.IOPipely | Portably create pipe() or pipe-like handles, one way or another |
| haskellPackages.wai-extra_3_1_17 | Provides some basic WAI handlers and middleware |
| perl5Packages.IOPipely | Portably create pipe() or pipe-like handles, one way or another |
| haskellPackages.mega-sdist | Handles uploading to Hackage from mega repos |
| ocamlPackages.opam-solver | This library is based on the Cudf and Dose libraries, and handles calls to the external solver from opam |
| haskellPackages.hslogger4j | DEPRECATED hslogger handlers for log4j's XMLLayout |
| perl540Packages.IOPipely | Portably create pipe() or pipe-like handles, one way or another |
| perl538Packages.IOPipely | Portably create pipe() or pipe-like handles, one way or another |
| ocamlPackages_latest.opam-solver | This library is based on the Cudf and Dose libraries, and handles calls to the external solver from opam |
| haskellPackages.silently | Prevent or capture writing to stdout and other handles |
| perlPackages.MixinLinewise | Write your linewise code for handles; this does the rest |
| perl5Packages.MixinLinewise | Write your linewise code for handles; this does the rest |
| penelope | Penelope Shell Handler |
| haskellPackages.hspr-sh | Session handler for HSP |
| perl540Packages.MixinLinewise | Write your linewise code for handles; this does the rest |
| perl538Packages.MixinLinewise | Write your linewise code for handles; this does the rest |
| haskellPackages.explicit-iomodes | File handles with explicit IOModes |
| haskellPackages.doldol | Flag packer & handler for flaggable data |
| haskellPackages.gladexml-accessor | Automagically declares getters for widget handles in specified interface file |
| haskellPackages.yesod-raml-mock | A mock-handler generator library from RAML |
| haskellPackages.happlets | "Haskell Applets" provides an event handler and a canvas for building simple GUI apps |
| perlPackages.HTMLMasonPSGIHandler | PSGI handler for HTML::Mason |
| perl5Packages.HTMLMasonPSGIHandler | PSGI handler for HTML::Mason |
| haskellPackages.classy-effects | An interface for a handler-independent, typeclass-based effect system |
| texlivePackages.kvsetkeys | Key value parser with default handler support |
| haskellPackages.classy-effects-base | An interface for a handler-independent, typeclass-based effect system |
| perl538Packages.HTMLMasonPSGIHandler | PSGI handler for HTML::Mason |
| perl540Packages.HTMLMasonPSGIHandler | PSGI handler for HTML::Mason |
| texlivePackages.blopentype | A basic LuaTeX OpenType handler |
| haskellPackages.hack-frontend-monadcgi | Allows programs written against MonadCGI to run with any hack handler. (deprecated) |
| haskellPackages.mailchimp-subscribe | MailChimp subscription request handler |