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Why I Founded Textualize

I founded Textualize with the express purpose of reversing what I saw as years of neglect in a critical developer tool: the terminal. That little window and flashing cursor that is the starting point and constant companion for many a software project.

Neglect may be nothing new in the tech world. When we collectively decide that the new generation of software has arrived, we neglect what came before it. It's a natural consequence of progress and no bad thing.

What's different about the terminal is that nobody got the memo that we should stop using it. The browser, with all its power, is seen as a companion to the terminal by developers, not as a rival. Terminals appear to reside in a niche they are so ideally suited for that tech Darwinism can't touch them. In a 2022 survey of developers, 89% responded that they have a terminal open at least half of the day. Clearly developers are as engaged with the terminal as much as the browser, and yet few tech companies give it more than a second thought.


Rich for Python

Rich                                                     Rich features                                                         Colors   ✓ 4-bit color ✓ 8-bit color ✓ Truecolor (16.7 million) ✓ Dumb terminals ✓ Automatic color conversion    Styles   All ansi styles: bolddimitalicunderlinestrikethroughreverse, and even blink.                      Text    Word wrap text. Justify leftcenterright or full.                                                    Lorem ipsum dolor sit      Lorem ipsum dolor sit     Lorem ipsum dolor sitLoremipsumdolorsit amet, consectetur            amet, consectetur           amet, consecteturamet,consectetur adipiscing elit. Quisque adipiscing elit. Quisque adipiscing elit. Quisqueadipiscingelit.Quisque in metus sed sapien         in metus sed sapien        in metus sed sapieninmetussedsapien ultricies pretium a at    ultricies pretium a at    ultricies pretium a atultriciespretiumaat justo. Maecenas luctus    justo. Maecenas luctus    justo. Maecenas luctusjusto.Maecenasluctus velit et auctor maximus. velit et auctor maximus. velit et auctor maximus.velit et auctor maximus.    Asian    🇨🇳  该库支持中文,日文和韩文文本!                                                                        language  🇯🇵  ライブラリは中国語、日本語、韓国語のテキストをサポートしています                                      support   🇰🇷  이 라이브러리는 중국어, 일본어 및 한국어 텍스트를 지원합니다                                           Markup   Rich supports a simple bbcode-like markup for colorstyle, and emoji! 👍 🍎 🐜 🐻 🥖 🚌                   Tables   DateTitleProduction BudgetBox Office ───────────────────────────────────────────────────────────────────────────────────────── Dec 20, 2019Star Wars: The Rise of Skywalker        $275,000,000  $375,126,118 May 25, 2018Solo: A Star Wars Story                 $275,000,000  $393,151,347 Dec 15, 2017Star Wars Ep. VIII: The Last Jedi       $262,000,000$1,332,539,889 May 19, 1999Star Wars Ep. IThe phantom Menace     $115,000,000$1,027,044,677    Syntax    1 defiter_last(values:Iterable[T])->Iterable{ highlighting 2 │   """Iterate and generate a tuple with a fla│   'foo'[      &       3 │   iter_values=iter(values)│   │   3.1427,    pretty    4 │   try:│   │   (   printing   5 │   │   previous_value=next(iter_values)│   │   │   'Paul Atreides',  6 │   exceptStopIteration:│   │   │   'Vladimir Harkonnen',  7 │   │   return│   │   │   'Thufir Hawat'  8 │   forvalueiniter_values:│   │   )  9 │   │   yieldFalse,previous_value│   ], 10 │   │   previous_value=value│   'atomic'(FalseTrueNone) 11 │   yieldTrue,previous_value}   Markdown  # Markdown┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓ Markdown Supports much of the *markdown* __syntax__!┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛ - HeadersSupports much of the markdownsyntax! - Basic formatting: **bold**, *italic*, `code` - Block quotes • Headers - Lists, and more... • Basic formatting: bolditaliccode  • Block quotes  • Lists, and more...    +more!   Progress bars, columns, styled logging handler, tracebacks, etc...                                     

I see the neglect in the terminal world as a mistaken assumption that whatever can be done in the terminal, has been done, and there is little to gain from attempting to enhance the terminal experience. My work on Rich made it clear to me that developers were delighted by any visual enhancements. Not only was innovation still possible with a technology older than most developers, but there was real demand for it.

Terminals and browsers coexist so comfortably in developer's minds because there are distinct use-cases for each; we instinctively know when to reach for one over the other. Yet there is a class of terminal application that defies such an obvious taxonomy. The TUI, or Text User Interface, is an application which takes over the terminal and can present windows, views, and dialogs. There was a time when these apps were the primary way of interacting with a computer. That era is long gone. Yet, like the terminal itself, TUIs survive to this day. In fact, they are more popular than ever.

There are some technical advantages to these apps: a developer can operate a TUI over an encrypted channel on a remote server. But this is often not the primary or even secondary reason why a developer would reach for a TUI over a web application.

TUIs can transition seamlessly from the command line and back again without interrupting the developer's train of thought, which explains some of their popularity. TUIs are also popular for many of the reasons that terminals themselves are popular: a minimal keyboard-focused interface that rewards repeated use. One that is free of distractions and context switching. Additionally, terminals are a natural fit for the clean lines, dark mode, aesthetic that even web apps seek to emulate.

Having talked to many developers on the subject, I understood that there were few use-cases where a developer would not want a TUI. Many enthused about TUI interfaces to system administration tasks, network automation, internal analytics, and crypto currency bots, but for every work related application there was a desire for a productivity tool, calendar, distraction-free writing and any number of apps were developers would eschew the web or desktop in favor of a TUI.

There is clearly demand but short supply. TUIs have traditionally been built with an API conceived in the 90s. There has been almost zero innovation since then. Neglect meant that none of the advancements in the world of application development made it to the terminal.


My answer to this is Textual, a project I started in 2021 to take the best of innovation from the web and desktop world and bring it to the terminal. The prospect of being able to build TUIs without grappling with archaic tools created a lot of buzz in the Python community and beyond.

CloudTrail Viewer CloudTrail Viewer — 658 events loaded, 72 matched Users───────────────────────────────────────────────────────────────────────Event Detail────────────────────────────────────────────────────────────────  AWSServiceRoleForApplicationAutoScaling_ECSService/AutoScaling-UpdateDesiredC 1 {  CloudTrail_Engine_EC2/i-15bca77e870801c28                                     2 "EventId":"3cb3317c-b33e-4822-b2e9-c6aae16e30b1",  CloudTrail_Engine_Lambda/start_cloudtrail_engine                             ❱  3 "EventName":"StartInstances",  AstroCloud/AstroCloud                                                         4 "ReadOnly":"false",  lambda_Spacer_Execution/SnapShotMaker                                         5 "AccessKeyId":"XXXXXXXXXXXXXXXXXXXX",  VPCFlowLog_Engine_Lambda/1b8cd5af33629fa318cb4265ef52964f                     6 "EventTime":"2023-04-07 08:00:12-04:00",  VPCFlowLog_Engine_Lambda/vpcflowlog_engine                                    7 "EventSource":"", ❱  8 "Username":"start_cloudtrail_engine", ──────────────────────────────────────────────────────────────────────3 of 7 9 "Resources":[ Events──────────────────────────────────────────────────────────────────────10 {▅▅  Time                       Source                Event                    Err11 "ResourceType":"AWS::EC2::Instance",  2023-04-07 08:00:14-04:00     CreateGrant             12 "ResourceName":"i-15bca77e870801c28"  2023-04-07 08:00:12-04:00     StartInstances          13 }  2023-04-07 08:00:12-04:00     ModifyInstanceAttribute 14 ],  2023-04-07 08:00:12-04:00    CreateLogStream         15 "CloudTrailEvent":{ 16 "eventVersion":"1.08", 17 "userIdentity":{ 18 "type":"AssumedRole", ❱ 19 "principalId":"XXXXXXXXXXXXXXXXXXXXX:start_cloudtrail_engi s:sts::111222333444:assumed-role/CloudTrail_E Filter Evenets111222333444", "XXXXXXXXXXXXXXXXXXXX",  • Search terms are case-insensitivet":{  • Terms are matched using a logical ANDsuer":{  • To exclude a term, prefix with a hypen (-):"Role",  • Substrings in both keys and values are searchedipalId":"XXXXXXXXXXXXXXXXXXXXX", "arn:aws:iam::111222333444:role/CloudTrail_E ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔ntId":"111222333444", StartClose ──────────────────────────────────────────────▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁───────────────────────────────────────────────  Q  Quit  C  Copy  E  Export  F  Filter  L  Lay
An app built with Textual

The first iteration of Textual was a hobby project, created to pass the time and satisfy some intellectual curiosity. Only once I was satisfied that there were no technical reasons as to why this had never been attempted, did I realize there was opportunity here. The unique characteristics of TUIs, namely low systems requirements, cross platform, remotely accessible, could find a previously unexplored niche -- which only Textual could fully exploit.

I would not want Textual to stray from its roots as Free and Open Source software, but selling "picks and shovels" would not compromise that. The opportunity felt compelling enough for me to quit my job in late 2021 and live on savings for a year. At the end of the year I would have built Textual and a related web service which I could then turn into a business.

Founding Textualize was very much a plan B. But funding enabled me to be more ambitious in my mission to rejuvenate the terminal. Our next challenge as a company is to solve the problem of distribution. Paradoxically, although terminal software is installed on every desktop computer ever shipped, the terminal is little known outside of developers and other technical users. If TUIs are to truly reach their potential we need to make them accessible to more typical users.

I see Textualize as the vanguard in a terminal renaissance. I don't know why there is renewed interest in the terminal as a platform now. We could have asked more of terminals years ago. But we are in a unique position to halt and reverse years of neglect.

Will McGugan

CEO / Founder