Question: Which editor created by Allan Odgaard does the standlaone code editor, Ace, is aimed at improving upon?

Context paragraphs:
Ace (editor): Ace (from Ajax.org Cloud9 Editor) is a standalone code editor written in JavaScript.  The goal is to create a web-based code editor that matches and extends the features, usability, and performance of existing native editors such as TextMate, Vim, or Eclipse.  It can be easily embedded in any web page and JavaScript application.  Ace is developed as the primary editor for Cloud9 IDE and as the successor of the Mozilla Skywriter project.

Source code editor: A source code editor is a text editor program designed specifically for editing source code of computer programs by programmers.  It may be a standalone application or it may be built into an integrated development environment (IDE) or web browser.  Source code editors are the most fundamental programming tool, as the fundamental job of programmers is to write and edit source code.

TextMate: TextMate is a general-purpose GUI text editor for Mac OS X created by Allan Odgaard.  TextMate features declarative customizations, tabs for open documents, recordable macros, folding sections, snippets, shell integration, and an extensible bundle system.

AppleScript Editor: AppleScript Editor, formerly and more recently known as Script Editor, is a code editor for the AppleScript scripting language, included in classic Mac OS and macOS.  AppleScript Editor provides basic debugging capabilities and can save AppleScripts as plain text (. applescript), as a compiled script (. scpt), as a script bundle (. scptd), or as an application (. app).  AppleScript Editor also handles script dictionary files, allowing the user to see what scripting classes and commands are available for each scriptable application installed on the computer.

SlickEdit: SlickEdit, previously known as Visual SlickEdit, is a cross-platform commercial source code editor and Integrated Development Environment developed by SlickEdit, Inc.  SlickEdit supports Integrated Debuggers for GNU C/C++, Java, WinDbg, Clang C/C++ LLDB, Groovy, Google Go, Python, Perl, Ruby, PHP, Xcode, and Android JVM/NDK.  Some of SlickEdit's other notable features include built in beautifiers that can beautify code as you type, code navigation, context tagging (also known as Intelligent code completion), symbol references, third party tool integration, DiffZilla (a file differencing tool), syntax highlighting, and over 13 keyboard emulations.

Visual Studio Code: Visual Studio Code is a source code editor developed by Microsoft for Windows, Linux and macOS.  It includes support for debugging, embedded Git control, syntax highlighting, intelligent code completion, snippets, and code refactoring.  It is also customizable, so users can change the editor's theme, keyboard shortcuts, and preferences.  It is free and open-source, although the official download is under a proprietary license.

NEdit: NEdit, the Nirvana editor, is a text editor and source code editor for the X Window System.  It has an interface similar to text editors on Microsoft Windows and Macintosh, rather than to older UNIX editors like Emacs.  It was initially developed by Mark Edel for Fermilab and released under a very restrictive licence, but today it is distributed under the less restrictive GNU General Public License (plus Motif clause ¹), and developed as an independent open source project by a team of developers.  Nedit was also distributed with the IRIX operating system.

Code Lyoko: Evolution: Code Lyoko: Evolution is the sequel to the French animated television series "Code Lyoko".  It premiered on December 19, 2012, on France 4 and repeated October 9, 2016, on Boing.  It blends live-action with CGI, picking up where the original series left off.  In addition to improving upon the CGI in the original series, the soundtrack has been overhauled as well.

Source Insight: Source Insight is a source code editor by Source Dynamics.  Source Insight provides syntax highlighting, code navigation and customizable keyboard shortcuts.  It bills itself not just as an editor but a tool to understand a large source code base, and for this reason is called "program editor and analyzer."  It is agile and lightweight providing useful features such as relation, context, and symbol windows.  It also can display reference trees, class inheritance diagrams, and call trees, as it builds an internal database of symbolic information as it self-parses the source.  Its greatest benefit is to speedup code comprehension on an unfamiliar project.

Crimson Editor: Crimson Editor is a freeware text editor for Microsoft Windows.  It is typically used as a source code editor and HTML editor.  The author was Ingyu Kang.

Supporting paragraphs: Ace (editor) TextMate
Answer: TextMate