A small investor easily drowns in market data, the number of decision-making support methods, the sheer abundance of investment targets and service options, and various stimuli. One could spend more hours per day marveling at markets and researching stocks than are available in a month.
What if we compiled a list of tools, websites, technological solutions, data sources, and why not methods, that forum members have found to be the best? All products, services, websites, etc., that support/facilitate/enhance/etc. investment activities, as well as lifehacks, belong to this group. Perhaps it’s not worth including ordinary Excels and every financial media outlet on the list (or is it?), but the idea could be to share the most important tools that have helped one’s own activities the most, and which are presumably not common knowledge. For example, Excel/G-Sheets macros or templates, and Kauppalehti’s Oma Salkku (My Portfolio) service would fit in. If the list starts to grow, the best picks can then be compiled concisely into this introductory post.
I am on the learning side of this matter, and I don’t have any notable tools that deviate from general use. However, by way of example, I could highlight the following:
Investing.com - This probably falls into the common knowledge category on this forum, but it only dawned on me early this year that I can get free live quotes and futures for US exchanges, as well as a technical analysis tool, from here. For these purposes, it’s my number one service.
µFunds - An add-on for Google Sheets designed for live tracking of funds. It makes retrieving basic fund numbers with an ISIN code as easy as retrieving stock data with a ticker.
Nordnet Watchlists - So far, the best solution I’ve found for compiling various lists for different purposes. The screenshot conveniently fits the essentials. For example, there’s a list for “watch-class” stocks for which a purchase decision has essentially been made, but whose valuation is still expected to decline. Those awaiting review are on their own list, and outside the image, there’s also a list of stocks I own through Nordea, so I can see their changes more pleasantly from Nordnet. The industry lists mainly contain interesting OMXH industries in their own lists, allowing one to distinguish stock price changes that deviate from the industry with a single glance. A valid solution for tracking stock values, but not really suitable for examining key figures within an industry…
Inderes.fi - Last but not least, an excellent analysis service and discussion forum, worth getting acquainted with if you haven’t already 
As a clear tool, I use the stock comparison, from which one might pick up ideas for undervalued stocks.
Kiitokset vastaajille.