diff --git a/README.md b/README.md
index 9009bcc..5118b0c 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,7 @@ Web archiving, an effort to preserve the Web for future generations.
   * [Replay](#replay)
   * [Search & Discovery](#search--discovery)
   * [Utilities](#utilities)
+  * [WARC I/O Libraries](#warc-io-libraries)
   * [Analysis](#analysis)
   * [Quality Assurance](#quality-assurance)
 * [Community Resources](#community-resources)
@@ -105,28 +106,31 @@ This list of tools and software is intended to briefly describe some of the most
 ### Utilities
 
 * [ArchiveTools](https://github.com/recrm/ArchiveTools) - Collection of tools to extract and interact with WARC files (Python).
-* [HadoopConcatGz](https://github.com/helgeho/HadoopConcatGz) - A Splitable Hadoop InputFormat for Concatenated GZIP Files (and *.warc.gz). (Stable)
 * [har2warc](https://github.com/webrecorder/har2warc) - Convert HTTP Archive (HAR) -> Web Archive (WARC) format (Python).
 * [httpreserve.info](http://httpreserve.info/) - Service to return the status of a web page or save it to the Internet Archive. Returns JSON via browser or command line via CURL using GET (Golang Package). (Stable)
 * [HTTPreserve Workbench](https://github.com/httpreserve/workbench) - Tool and API to describe the status of a web page encoded in a simple JSON output describing current status, and earliest and latest links on wayback.org. Save a web page to the Internet Archive. Audit lists of URIs and output a CSV with the data described above (Golang). (In Development)
-* [Jwat](https://sbforge.org/display/JWAT/JWAT) - Libraries and tools for reading/writing/validating WARC/ARC/GZIP files (Java). (Stable)
 * [MementoMap](https://github.com/oduwsdl/MementoMap) - A Tool to Summarize Web Archive Holdings (Python). (In Development)
 * [MemGator](https://github.com/oduwsdl/MemGator) - A Memento Aggregator CLI and Server (Golang). (Stable)
 * [node-cdxj](https://github.com/N0taN3rd/node-cdxj) - [CDXJ](https://github.com/oduwsdl/ORS/wiki/CDXJ) file parser (Node.js). (Stable)
-* [node-warc](https://github.com/N0taN3rd/node-warc) - Parse WARC files or create WARC files using either [Electron](https://electron.atom.io/) or [chrome-remote-interface](https://github.com/cyrus-and/chrome-remote-interface) (Node.js). (Stable)
 * [OutbackCDX](https://github.com/nla/outbackcdx) - RocksDB-based capture index (CDX) server supporting incremental updates and compression. Can be used as backend for OpenWayback, PyWb and [Heritrix](https://github.com/ukwa/ukwa-heritrix/blob/master/src/main/java/uk/bl/wap/modules/uriuniqfilters/OutbackCDXRecentlySeenUriUniqFilter.java). (Stable)
 * [py-wasapi-client](https://github.com/unt-libraries/py-wasapi-client) - Command line application to download crawls from WASAPI (Python). (Stable)
 * [The Archive Browser](https://archivebrowser.c3.cx/) - The Archive Browser is a program that lets you browse the contents of archives, as well as extract them. It will let you open files from inside archives, and lets you preview them using Quick Look. WARC is supported (macOS only, Proprietary app).
 * [The Unarchiver](http://unarchiver.c3.cx/unarchiver) - Program to extract the contents of many archive formats, inclusive of WARC, to a file system. Free variant of The Archive Browser (macOS only, Proprietary app).
 * [tikalinkextract](https://github.com/httpreserve/tikalinkextract) - Extract hyperlinks as a seed for web archiving from folders of document types that can be parsed by Apache Tika (Golang, Apache Tika Server). (In Development)
+* [wasapi-downloader](https://github.com/sul-dlss/wasapi-downloader) - Java command line application to download crawls from WASAPI. (Stable)
+* [WarcPartitioner](https://github.com/helgeho/WarcPartitioner) - Partition (W)ARC Files by MIME Type and Year. (Stable)
+* [webarchive-indexing](https://github.com/ikreymer/webarchive-indexing) - Tools for bulk indexing of WARC/ARC files on Hadoop, EMR or local file system.
+* [wikiteam](https://github.com/WikiTeam/wikiteam) - Tools for downloading and preserving wikis. (Stable)
+
+### WARC I/O Libraries
+
+* [HadoopConcatGz](https://github.com/helgeho/HadoopConcatGz) - A Splitable Hadoop InputFormat for Concatenated GZIP Files (and *.warc.gz). (Stable)
+* [Jwat](https://sbforge.org/display/JWAT/JWAT) - Libraries and tools for reading/writing/validating WARC/ARC/GZIP files (Java). (Stable)
+* [node-warc](https://github.com/N0taN3rd/node-warc) - Parse WARC files or create WARC files using either [Electron](https://electron.atom.io/) or [chrome-remote-interface](https://github.com/cyrus-and/chrome-remote-interface) (Node.js). (Stable)
 * [Warcat](https://github.com/chfoo/warcat) - Tool and library for handling Web ARChive (WARC) files (Python). (Stable)
 * [warcio](https://github.com/webrecorder/warcio) - Streaming WARC/ARC library for fast web archive IO (Python).
 * [warctools](https://github.com/internetarchive/warctools) - Library to work with ARC and WARC files (Python).
-* [wasapi-downloader](https://github.com/sul-dlss/wasapi-downloader) - Java command line application to download crawls from WASAPI. (Stable)
-* [WarcPartitioner](https://github.com/helgeho/WarcPartitioner) - Partition (W)ARC Files by MIME Type and Year. (Stable)
 * [webarchive](https://github.com/richardlehane/webarchive) - Golang readers for ARC and WARC webarchive formats (Golang).
-* [webarchive-indexing](https://github.com/ikreymer/webarchive-indexing) - Tools for bulk indexing of WARC/ARC files on Hadoop, EMR or local file system.
-* [wikiteam](https://github.com/WikiTeam/wikiteam) - Tools for downloading and preserving wikis. (Stable)
 
 ### Analysis