Tencent:
QQ Video (https://player.qq.com/) (Ad-free universal decoder)
Foxmail (https://www.foxmail.com/) (Lightweight personal email, unlimited space, ad-free client)
VooV (https://voovmeeting.com/) (Video conferencing platform)
Tencent Lemon Cleaner (https://lemon.qq.com/) (Mac cleaning tool)
Tencent Zhiying (https://zenvideo.qq.com/home) (All-in-one online creation tool)
Tencent Desktop Organizer (https://guanjia.qq.com/product/zmzl/) (File classification, disk mapping, precise search! Remember to choose the independent version for download, or use Tencent PC Manager +1)
Alibaba:
Alibaba Enterprise Mail (https://exmail.aliyun.com/free) (Permanently free custom domain email)
Alibaba Iconfont (https://www.iconfont.cn/) (Massive vector icons for free download)
Baidu:
Paddle AI Studio (https://aistudio.baidu.com/aistudio/index) (Free AI and graphics-related GPU computing power, large quantity and sufficient supply)
Tushuo (https://tushuo.baidu.com/) (Chart editor)
360:
360 Zip (http://www.360totalsecurity.com/360zip/) (Ad-free, non-bundled compression software)
Shouxin Input Method (https://www.xinshuru.com/) (Ad-free, good compatibility with Android clipboard)
Huawei:
Huanban Speed Test (https://consumer.huawei.com/cn/support/content/zh-cn15821163/) (Ad-free, lightweight, versatile network testing tool)
Huanban Clip (https://consumer.huawei.com/cn/mobileservices/petalclip/) (AI editing! One-click film production! Everyone can create quickly!)
Phone Clone (https://consumer.huawei.com/cn/emui/clone/) (One-click migration for Android/Hongmeng, offline operation without leaving any traces)
Thunder:
Magic Hand of Light and Shadow (http://www.neoimaging.cn/) (One-click photo editing and background changing software, ready to use, but no updates after 2014)
ByteDance:
Icon Park (https://iconpark.oceanengine.com/home) (Free and open-source icon site)
Google:
Google Fonts (https://fonts.google.com/) (Google Fonts, browse over a thousand fonts online, a designer's delight)
Google Ngram Viewer (https://books.google.com/ngrams) (Historical literature keyword analysis tool, meme generator)
Talk to Books (https://books.google.com/talktobooks/) (An AI that browses through books, a conversation with books, a conversation with history)
Microsoft:
Math (https://math.microsoft.com/) (Step-by-step math problem-solving tool, includes various visualization tools)
Power BI (https://powerbi.microsoft.com/) (Superb big data visualization and analysis tool, absolutely cool)
Azure Free (https://azure.microsoft.com/zh-cn/free/) (Permanently free NoSQL services, IoT Edge, 100GB of free outbound traffic worldwide per month, etc.)
Github (https://github.com/) (The world's largest same-sex dating platform)
Cloudflare:
1.1.1.1 (https://1.1.1.1/) (Cross-platform network acceleration software, WARP+!)
Workers (https://www.cloudflare.com/zh-cn/products/workers/) (Decentralized edge computing nodes without servers, 50K monthly limit)
Also free CDN, DDOS defense, and zero-trust platform,
He's really, whoever uses it will cry
Amazon:
Amazon SES/SNS (https://aws.amazon.com/cn/free/) (Commercial free email delivery service, 62K/month free usage)
IBM:
IBM Watson® (https://www.ibm.com/cloud/free) (Powerful AI calling library, with everything from text-to-speech, text translation, semantic analysis, visual recognition, natural language processing, etc., monthly limit)
IBM® Db2® on Cloud (https://www.ibm.com/cloud/free) (200MB IBM database, permanently free)
Adobe:
Adobe Photoshop Express (https://www.microsoft.com/store/productId/9WZDNCRFJ27N) (Lightweight version of Photoshop, ready to use and easy to get started)
Adobe Fresco (https://apps.microsoft.com/store/detail/XP8C8R0ZKZR27V) (Drawing and coloring tool, made for artists)
Adobe Color Palette (https://color.adobe.com/zh/create) (Mom doesn't have to worry about me not finding a good color scheme anymore!