Third-party notices

Tao Browser is proprietary software by Hostao; its source code is private. It includes a few open-source components, and their licences ask us to show the notices below.

Tao Browser itself

© Hostao L.L.C. All rights reserved. Tao Browser's own code is not open source and is not licensed for reuse. The names “Tao Browser” and “Hostao”, and the Hostao logo, are trademarks. Use of the app is covered by our terms. The open-source components below stay under their own licences.

Third-party notices

Tao Browser uses the operating system's own web engine: Apple WebKit on Mac, iPhone and iPad, and Android System WebView on Android. These are part of the operating system and are not distributed with Tao.

EasyList and EasyPrivacy (all apps)

Ad and tracker blocking uses EasyList and EasyPrivacy by The EasyList authors ( easylist.to). The lists are dual-licensed under the GNU General Public License v3 or later and Creative Commons Attribution-ShareAlike 3.0 or later ( licence statement); Tao uses them under CC BY-SA 3.0. The Mac and iPhone/iPad apps convert the lists into WebKit content-blocker rules and ship the converted rules, which are available under the same licence. The Android app downloads the unmodified lists from easylist.to and applies them on your device.

Sparkle 2 (Mac app, software updates)

sparkle-project.org, MIT License. Full licence, including the notices for code bundled in Sparkle:

Copyright (c) 2006-2013 Andy Matuschak.
Copyright (c) 2009-2013 Elgato Systems GmbH.
Copyright (c) 2011-2014 Kornel Lesiński.
Copyright (c) 2015-2017 Mayur Pawashe.
Copyright (c) 2014 C.W. Betts.
Copyright (c) 2014 Petroules Corporation.
Copyright (c) 2014 Big Nerd Ranch.
All rights reserved.

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

=================
EXTERNAL LICENSES
=================

bspatch.c and bsdiff.c, from bsdiff 4.3 <http://www.daemonology.net/bsdiff/>:

Copyright 2003-2005 Colin Percival
All rights reserved

Redistribution and use in source and binary forms, with or without
modification, are permitted providing that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.

--

sais.c and sais.h, from sais-lite (2010/08/07) <https://sites.google.com/site/yuta256/sais>:

The sais-lite copyright is as follows:

Copyright (c) 2008-2010 Yuta Mori All Rights Reserved.

The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.

--

Portable C implementation of Ed25519, from https://github.com/orlp/ed25519

Copyright (c) 2015 Orson Peters <orsonpeters@gmail.com>

This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software.

Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.

2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.

3. This notice may not be removed or altered from any source distribution.

--

SUSignatureVerifier.m:

Copyright (c) 2011 Mark Hamlin.

All rights reserved.

### AndroidX, Jetpack Compose and Kotlin (Android app)

The Android app uses AndroidX libraries (Activity, Core, WebKit), Jetpack Compose (UI, Foundation, Material 3, Material Icons) by The Android Open Source Project, and the Kotlin standard library by JetBrains, all licensed under the [Apache License, Version 2.0](https://www.apache.org/licenses/LICENSE-2.0). Copyright The Android Open Source Project and JetBrains s.r.o. and Kotlin contributors. Licensed under the Apache License, Version 2.0; you may not use these files except in compliance with the License. Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

### Services you choose

Have I Been Pwned (Pwned Passwords, breach check on Mac), Google Gemini (AI panel on Mac, with your own key) and the search engine you pick are online services used under their own terms; no code from them is included.