Life & fun · alternatives · 2026

24 alternatives to Disk Notifier

No downtime with dead simple disk space monitoring

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier. Disk Notifier launched in 2021; newer entries below may have overtaken it.

1
SimpleOps▲297
Keep your websites up and never lose customers
2020 · simpleops.io · its alternatives →
2
I made a down detector for down detectorfree▲591
After down detector went down with the rest of the internet during the Cloudflare outage today I decided to build a robust, independent tool which checks if down detector is down. Enjoy!!
Nov 2025 · downdetectorsdowndetector.com · its alternatives →
3
Notifier for Reddit▲179
Find new customers and monitor your brand on the internet
2019 · notifier.so · its alternatives →
4
Apollo▲101
Reliable uptime monitoring, status pages & much more
2020 · its alternatives →
5
Daisy Disk 4.0▲366
Analyze disk usage and free up disk space on your Mac
2015 · daisydiskapp.com · its alternatives →
6
Hyperping 2.0▲401
Beautifully simple and reliable uptime monitoring
2018 · hyperping.com · its alternatives →
7
FindDiskKiller▲106
See which apps are hammering your Mac's disk
Jul 2026 · finddiskkiller.com · its alternatives →
8
Simple Uptime▲203
Monitor the health of your websites and servers inside Slack
2024 · simpleuptime.app · its alternatives →
9
SimpleBackups▲103
Website & database backups with smart features and an API
2019 · simplebackups.com · its alternatives →
10
DownNotifier▲139
Get an alert when your website is down 🚨
2016 · downnotifier.com · its alternatives →
11
Nudger, uptime monitoring made simple!▲7
Monitor your APIs without becoming a DevOps engineer
2025 · its alternatives →
12
SquirrelDisk▲69
Fast and open source disk usage analysis tool
2023 · github.com · its alternatives →
13
Disk Space Fan▲74
Fast disk space analyzer with smart visualizations
2020 · diskspacefan.com · its alternatives →
14
Uptime Monitor▲76
Get instant alerts when your website goes down.
2023 · uptime-monitor.io · its alternatives →
15
Uptime by Linkjar▲64
Be the first who knows that your website is down
2021 · its alternatives →
16
Uptime System▲5
Eliminate SaaS Downtime
2024 · its alternatives →
17
Netumo▲92
Uptime monitoring is easy, and simple.
2021 · netumo.com · its alternatives →
18
Telmai▲98
Monitor your customer data quality in real-time
2021 · telm.ai · its alternatives →
19
Uptime Monitor by HetrixTools▲81
Minimize your downtime by being the first to know about it
2021 · hetrixtools.com · its alternatives →
20
Dockcase 2.5" Smart Hard Drive Enclosure▲68
Your data guardian, no longer worry about data loss
2022 · kickstarter.com · its alternatives →
21
eBPF tool to monitor disk usage, perform actions▲22
eBPF based tool to monitor disk usage, perform actions when threshold breached. - Lakshmipathi/ebpf-diskalert
2023 · github.com · its alternatives →
22
smartmontools▲4
control and monitor storage systems using SMART
2019 · smartmontools.org · its alternatives →
23
DiskPeek▲3
See what’s eating your disk. Fast.
Sep 2026 · diskpeek.app · its alternatives →
24
DiskTriage – A simple CLI tool to reclaim space on your Win C drive▲5
A simple CLI tool to reclaim space on your Windows C: drive safely - ricardoborges/DiskTriage
Sep 2026 · github.com · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →